synopsis: jake reminds himself itâs just biology. just the instincts of his newly-acquired form urging him to take, to claim, to keep. and maybe, just maybe, he couldâve controlled it. (had you not made everything so damn difficult, of course.) avatar!jake sully x fem!scientist!reader
warnings: there's no plot here friends i am SORRY, kind of dark!jealous!jake if you squint, slight enemies to lovers, graphic, descriptions of lust bc imagery goes wild here, explicit sexual content [18+ MINORS DNI], dom/sub dynamics, dubcon, dirty talk, slightly sacrilegious?, dacryphilia, major major size kink, biting/marking, jake sully being himself should be an inbuilt warning, let's pretend (for the bio minor stem girly in me) that the lab is somehow perfectly clean and non-contaminated after this pls
jake finds you in the lab, your eyes scrunched into crescent moons underneath scuffed safety glasses hooked loosely behind your ears. his own pin back against the underside of his head instinctively, attuned to the rhythmic, near-silent reverberation of your breath. in. out. in. out. your gloved hands (ancient latex, he notes with a disgruntled twitch of his nose) shake incrementally as you peer into the microscope you're hunched over, adjusting the brilliance of the light painting your petri-dished specimen in a silvery glow. the sound you release when you get it just rightâfaint, pleased, unfairly absentmindedâis enough to send a spark of something foreign down his spine. something delirious, fervent in nature. something that grits his teeth on instinct, clamps down on his jaw like barbed wire, like an insatiable beast clawing at the bars of its enclosure, crying out for the feeling of your flesh (futilely human, extremely off-limits) in its hands. and god, he's not supposed to think about you like that. not supposed to want you the way he did. not when his body isn't meant for you, not when he feels the chains of his forced entrapment in a life confined to a wheelchair coming undone at the sight of freedom. at the sight of you. in this form, he could take you. hell, he could have you. bite into you. he swipes his tongue across his top row of teeth, feeling for the elongated hooks of his canines. yeah, he'd like that.
he settles on making himself known. as his low hum of greeting fractures your reverie, your gaze snaps harshly to his, ricocheting of the surface of his skin. (and he likes it, the aggravation simmering under the surface of your composure. he's always had a soft spot for brats. for an animal to tame.) he swears he can hear the startled hitch in your breath, can sense the shaky, half-jump in your heart rate. "mornin' doc," he chirps, lips quirking up at the sight of the exasperation already etching itself into your features. you rip your safety glasses off, shoving them into a pocket of your lab coat before yanking your mask down with an irritated huff.
"i cannot with you today, sully." a muscle in the delicate column of your neck bounces under his unyielding stare as you reach underneath the metal tabletop to grapple for a pipette, balancing it in the junction between your thumb and index finger. sticky, cloying heat gathers in his veins, a tangible ache hunting for purchase in between his temples. take, it begs. take her.
you continue, oblivious. "and i told grace to change the code on the damn doorâ"
he clears his throat. reminds himself that fantasizing about you while you're within arm's reach of him is a decision better left unmade. "aw, c'mon, don't be like that. 'm not gonna stay long. not smart enough t'be a scientist like you, pretty."
you huff. "that's an understatement. go out and doâother things, then. stop bothering me." you yelp when his hands (heavyset, gorgeously sea-blue) meet the slim neck of your microscope, slapping them away with a flick of your wrist. "jake!"
a chuckle rumbles in the back of his throat as he backs away, arms raised mockingly in surrender. "show me what you're workin' on." his tail flicks across the backs of your thighs as he stalks around the table, diminishing the space between you. inch by inch. breath by breath. prowling. you track him warily, but a sharp gaspâlow, so low he swears he's imagining itâslips through your gritted teeth when his palms flatten against the counter on either side of your waist, your shoulder blades nearly pressed to the junction of his navel and thigh. you jolt when his tail curves downward to wrap around your ankle (fragile, he thinks, so breakable) and squeeze.
"heyâ" you warn, the force with which you grip the lab bench beneath you burning half-circle indentations of your fingernails into your palms. "what are youâ"
"show me," he coaxes, voice like honey down the curve of your spine. "teach me, if you wanna. 'm not complainin'." his face goes slightly slack when you shift your weight, the cotton of your coat brushing against his tensed lateral muscle. your proximity is stifling. suffocating. he nearly tackles you to the floor when your hand tentatively encases his wrist, the illusion of distance accompanied by an empty threat of resistance. (he just can't help himself, you see. hunting prey is in his biology; he has to do it to survive. and you understand that, donât you, sweet girl?)
"teach you?" your voice is erogenously breathless, spine fleetingly rigid. ramrod-straight, enraptured in the suggestive slide of his skin against yours. he resists the urge to outline the arc of your back with his knuckles. with his tongue. "not a service i offer, sully. not for you."
you shoot him a dark look over the incline of your shoulder, a brooding lilt scripted in the slant of your brow. an unavailing warning to his wandering hands. "why does it matter?"
the scent of you floods his senses as you shift, and his focus momentarily gives way to antiseptic and dampened soil, lemon and fresh chamomile, pine and vanilla-tinged sweat. a lingering body lotion, perhaps, or a coveted perfume. (and oh, are you trouble. trouble in the form of gentle hands, soft eyes, fragile bones. trouble in the way your defiance bleeds like a salted wound, roving gaze shirking under the weight of his shadow. it is raw, the way he longs to sink his teeth right into your godforsaken throat, apologies already teasing the tip of his tongue, just waiting for him to extinguish the fire he startedâ).
"just wanna know who's been spendin' time w' my girl." jake's chest vibrates with amusement against the dip of your nape, but the salacious slip of his tongue against the roof of his mouth betrays him. the heat of you burns through his layers (well, layer) of clothing, akin to an open flame. taunting him. tempting him. his gaze drops to the flex of your neck, the hypnotic flutter of your pulse thrumming dangerously close to the surface; the involuntary twitch of his fingers is only customary. only natural. "you're in 'ere too much, baby. gotta get you out."
"here's where the money is, jake," you counter, and his stomach seizes when your elbow brushes the braided cords of his tewng [loincloth]. "all the samples from the valley still need to be cataloged, and norm brought me aâ"
jake's voice slices through the air, crackling roughly with unbidden contempt, an edge of resentment he can't quite bring himself to swallow. "you're gettin' samples from that asshat now?"
you crook a brow. "well. he offered." (he battles the depraved urge to clasp his hand around the dainty column of your throat, to press his chest flush against the arch of your spine. to school you in the art of possession, of ownership, of instincts that slither through bone marrow, of urges that writhe beneath his skin like a sickness, ravenous and unrepentant.)
his jaw flexes lazily, tongue pressing heavy against the inside of his cheek. his restraint is a brittle thing, straining beneath the weight of something starved. something venomous. "'s that right?" his teeth flash pearly-white. "doin' a lot for you, isn't he?"
you whirl on your heels to face him, snaring his gaze in yours. your vexation rises, fiery and unmistakably overeager, but a viscous want accompanies it, swirling in the whites of your eyes. it grows bolder under his earthy stare, a mere captive to the deepening hunger stretching wordlessly between you. it lingers, needlessly persistent in its provocationâthe constant standoff of shallow breaths and locked jaws, of tongues bitten raw and fists clenched around unfulfilled promises of restraint. his stare tumbles downward to the wicked curve of your mouth, and he swears he can taste the startled exhale of breath that leaves you. gotcha.
"ever heard of overstaying a welcome, sully?" your expression dissolves into schooled imperturbability.
his braids follow the movement of his head as it tilts, azure skin glimmering aquamarine in the lab's sterile lamplight. your eyes track the slow sway of each woven strand, the way the beads threaded into each end collide sharply in syncâhypnotic, deliberate. erotic, almost. "careful, doc. keep talkin' like that and i might just start thinkin' you don't like me very much."
"i don't," you respond swiftly, but a flicker of suspicion contracts his pupils. he doesn't believe you for a single damn second. (and you're so pretty when you lie, aren't you? pretty girl, so resistant to an orbit your body is meant to sustain. saliva coats his mouth. the things he thinks of doing to you are despicable. downright lewd, even. he thinks of folding you in half. he thinks of molding you to his pleasure until you can't tell his name from your own. he thinks of making you cry. and he should feel guilty. he should chain himself to contrition. but he doesn't. he never has. he never will.)
he leans in. grins in wolfish pride when your pulse skips one, two, four beats. "you're a good liar, pretty. gotta give you that."
you jerk forward instinctively when one of his hands slides to your stomach, forcing the arch of your spine to coalesce with the unforgiving edge of the table. the other dips under your coat, captivation evident in the way his palm stretches effortlessly around the fullness of your waist. it is nearly consumption, an unfurling desire hell-bent on catharsis. on bitter-blooded ecstasy. (it is only nature, he reminds himself. it is only his new body, adjusting to the unfamiliarity of want for an object he cannot have. cannot attain. he's not himself. he's not thinking straight.)
"jake." a tinge of nervousness colors the syllables of his name as your mouth parts around them. he drops onto his haunches just as you reach for him, eluding the desparity of your touch. your hand flexes in midair, barren. "what are youâ"
"bet norm's thought about this." his voice is a rasp against your skin, curling warm in the crook of your neck. his nose brushes the tender slope of your pulse point as his words wash over it, savoring the frantic thrum of your heartbeat against his lips. "bet he's wonderin' what you feel like under all theseâ" a pause. intentional, drawn-out. with an arbitrary flick of his wrist, he slides your lab coat off your shoulders, his fingers ghosting across the expanse of bare skin he can see. "clothes."
"what the fuck are you talking about?" there is no bite to your bark, a weak imitation of pious resolve hovering in the air between you.
he heeds the urgency in your tone, leaning back on his heels. (he knows you're fighting it. fighting him. stubborn, sweet girl, ankles deep in quicksand. so damn eager to play the ethical upper hand. so devoutly attached to your cool-blooded composure. so resolute in slipping from his grasp. flighty. he grits his teeth. then again, he's always liked butterflies. they look so pretty on their backs.)
your shudder of breath betrays you. "this isn'tâwe can't."
his eyes narrowâwatching, knowing. he can smell it on you, the quiet betrayal of your body, the want fused to the rhythm of your pulse. it pools in your gaze, a laceration bound by silence. his fingers trace idle patterns along your thigh, evocative of ink kissed into parchment. a silent mantra hums beneath his touchâmine, mine, mine. "don't you want it?"
"it's a yes or no question, pretty."
"that's not fair." your lower lip juts outward, crowned by the swell of your trembling inhale. "you've don't even like me. and you're a pain in the ass. i'm not letting you take my clothes off just 'causeâ"
"who says i don't like you, huh?" he presses his nose to your sternum, grinning viciously when you choke. "i like you tons, baby."
"you didn't let me finish. i'm not letting you take my clothes off just 'causeâ"
"who says i was gonna take your clothes off?"
your fingers sink into his hair, curling along the sharp cut of his jaw, thumbs hooked around the curves of his ears. controlling, captivating. taking what is already yours. he is gold wrapped in skin, inescapably sweltering beneath your touch. liquid longing fills the void of cloying stillness, his gaze dragging lazily over your lips, your throat, the shell of your ear. your echoed stare is a live wire, leaping frantically from feature to feature. "you talk too much." the words ghost from your lips like silk. like a promise of calamity, of disaster.
his ears twitch, tracking the staggered cadence of your breath. "you keep lookinâ at me like that,â he drawls, smirk broadening, "and iâm gonna start thinkinâ you wanna do somethinâ about it."
you yank him forward, crushing your mouth to his with enough force to bruise. his answering groan reverberates down the channel of your throat as his teeth catch your lower lip, eyes eclipsed by the storm-black of his pupils. he does not hesitate to lay claim. does not hesitate to anchor your body against his, swallowing your startled yelp. it is animal, the festering in his chest. lust. it makes devils of good men. makes massacres of soldiers.
"'s this what you wanted? huh?" his hands palm the outline of your chest, marveling at the artificial ribcage his fingers provide. (he resists the urge to nip at the indentation of your collarbones, at the dainty bone lining the column of your throat). your hands scramble for his biceps when he slots an arm underneath your thighs and single-handedly places you on the counter. "yeah, y'did."
"shut up," you whimper, and oh, fuck, his teeth ache. there is no bite to your bark, a weak imitation of resolve hovering in the air between you. "j-just shut up."
"nah." jake stands as he slots a thigh between your legs, parting them around the intrusion. his mouth moves south to taste the damp skin of your pulse point, salty musk exploding on the base of his tongue as he sinks to his knees. (and he'd pray to you, if he could. would bring you trinkets at an altar made of gold. would stroke his cock right there, at the edge of your world and his, begging for you to touch him.) "i think y'like it when i talk." his nostrils flare. "can smell it on you."
the cotton of your shirt doesn't stand a chance; it tears like aged paper beneath his hands, splitting stitches merely rendered a casualty of his need. your entire body jolts, mouth poised in a soundless gasp as his name tumbles out of your mouth, caught in a dangerous balance of shock and rapture. his grin widens. "could fit all of you in 'ere," jake breathes in wonder, fingers unfurling against the expanse of your ribcage, cyan thumbs hooking under the padded fabric of your bra. "in my hands."
"god." the word rips from your throat, breathless, a prayer to something holy. something sacred. your head drops forward in surrender, forehead pressed against the sharp curve of his collarbone. his hands are everywhereâeverywhere, everything, all at onceâas the clasp of your bra gives way and his tongue draws forward to trace agonizingly slow circles against the side of your breast, just an inch from the growing tightness throbbing beneath your skin. "someoneâsomeone could see usâ"
"let 'em." it is sacrilegious, your little whimper, the way it escapes from the corner of your mouth. it instigates sin. calls upon forces beyond his better judgement, beyond plain, good common sense. beyond right and wrong. his fangs graze your nipple, and a harsh breath catches halfway up your throat, the hand in his hair tightening around his kuru {braid} instinctively. he chokes roughly, slicing through the silence with a drawling inhale. (careful, pretty.) a shameful blush paints your cheeks in mahogany as your hands trail downward, tracing the corner of his mouth with the pad of your thumb. (there is but a single strand of mangled control holding him together, and the second he snapsâ).
all it takes is one, broad palm flat against your sternum for your shoulder blades to kiss the cold metal of the table underneath you. pinned. (trapped). he tears into you like scripture. devouring not with mercy, not with patienceâbut with reverence. with ecstasy. it is simply a testament to the ruinous want stitched into the carbon-fiber of his bones, a hunger that has kept him starving, aching, waiting. your breath stutters, wrecked and disparately shallow, slipping from your lips in uneven waves. (he has never wanted anything the way he wants you. has never even known he could want something this damn much. and yet here you are, in front of him, his pretty little girlâ). you lift your hips obediently when his hands slip under your leggings, earning a low hum of approval as he tugs at the panties clinging wetly to your cunt, leaving both in a haphazard tangle around your ankles. his thumb presses into your pulse, feeling for frantic jump in your heartbeat.
"look at you," he drawls, tone akin to that of a drawn-out prayer. his entire frame shakes, an embodiment of fraying restraint. "so pretty f'r me. fuckin' wet, too."
you only realize he's dipped inside you when the tip of his middle finger brushes the silken, pulsating center of your core, a stretch so deep it borders on cruel. your entire body jolts as your mouth falls open in in a soundless cry, fingernails clawing uselessly at the tableâs edge. his groan bleeds through your ribs, settling into the hollows like a symphony only your bones remember. en echo of something long buried. "jake. jake, oh, fuckâ"
"that's my name, baby," he mutters, thumb smearing through your slick, cautious circles gathered methodically around the tingling bundle of nerves at the apex of your thighs. (your arousal smells like rain, like velvet rose, like a hazy memory of a garden at dawn gnawing at his fraying conscious.) "jesus fuck, can't even get two fingers in 'ere, pretty. how're you gonna take my cock like this, huh?" the sound that rips from your throat in response is nothing human. his fangs flash crystal, scissoring hand devastatingly carving out space to fit himself in between the thighs of a body not meant to hold him. a body not meant for his hands to touch. (but it would take divine intervention to stop him now. he is a hound, an animal spoiled rotten by the scent of flesh. your flesh.)
your hips jerk at the unexpected sight of his middle and ring finger sinking into his mouth, leaving your empty cunt clenching around nothing. your pupils blow wide as he hums against the sweetness of you on his tongue, swiping the muscle downward to catch the droplets of milky white lingering across his knuckles. (he finds himself wondering if your tears will taste as good as your cunt does). his name escapes your lips in a whisper, trailing gently over the softness of your skin. your pulse is a wreckage beneath his palm as his mouth crashes over yours once more, the prickling rhythm erratic against the rounded edge of your ribs.
thenâhe moves. presses his weight over you, drags his mouth down the line of your jaw, your throat, the shallow depression of your clavicle. "been thinkin' about this," he rasps as your hands flutter uselessly at your sides, scrambling for purchase against the line of his torso. he ruts his hips ever-so slightly forward, harshly reminded of the painful hardness throbbing under his tewng {loincloth}. "for so long. fuckin'âjerked off t'you. had a real nice dream, once."
your voice is unbearably soft, enslaved to single-minded pleasure. "you d-dream about me?"
jake's breath hitches, heat grazing the sweat-slick line of your throat. "yeah, baby. tons." his steady stare brushes yours, sapphire flush painting his freckles in a shade of liquid ivory. "gets worse after seein' you. can't sleep for days w' you patterin' around in 'ere." he raises a hand in a slow arc, fingers wandering along the tender line of his temple as the other works the strings of his tewng {loincloth} loose. it falls, forgotten, andâoh. oh. your lips part around a soundless gasp, any sense of decorum failing you. the sight of him eclipses language itself, glowing pre-cum slathering his length in a starry sheen, flushed tip carved from material far more primal than skin. than muscle, than bone. you swallow, pulse skipping, and his cocky-eyed grin only grows.
shameless, he nocks the dripping slit against the tender mess of your folds, coating himself in your slick with an unbidden groan. "wanna take samples? 's better than norm's, i promise."
"jakeâoh my god." he swallows your exclamation as his mouth claims the expanse of yours, hands branding heat along your ribs, your waist, the soft, trembling flesh of his thighs. his fingers wrap around your hips and pull, the blunt, aching weight of him nudging at your entrance. you whimper, dizzy with desire. "g-go slow," you slur, clambering for his shoulders, arching your back in an effort to appease the burn pulsating under your skin. light explodes behind your closed eyelids as he slowlyâslowlyâsinks the first inch inside; you seize, lower stomach contracting around the foreign intrusion. the stretch sings through you, the thick head of his cock cradled between your legs, and yet jake forces himself still, a vein pulsing in his forehead.
"lemme in, c'mon, pretty," jake pants, exhaling roughly through his nose. his cock throbs restlessly inside you as instinct claws at his spine, shaking with the urge to chase the relief of being fully sheathed, of simply forcing you down the rest of the way. he grits his teeth when you mewl, glimmering tears clinging to your waterline.
"'s not gonna fit," you howl, and guilt lances through him. (that's what he does with pretty things, isn't it? he breaks them. it's in his nature, written in the code of his biological being. he can't help himself, he's so sorry, pretty girlâ)
"fuck," he chokes, languish enshrining the syllables in agony. his tail wraps around your calf, soothing. easing. "fucking shit, i'm so sorry, prettyâ"
"hurts more when you stay still," you whisper, eyelashes damp where they flutter against the heat of your cheeks, and jake's breath pans over your throat in a sinking shudder. your vision spotlights as his fingers pull upward, reaching between your parted lips to gather the saliva pooling at the corner of your mouth. he kisses the shell of your ear as he strokes your spit lazily over his length, whining lowly at the lewdly-wet squelch. "d'you hear that?" his voice is enthralled. "that's you and me, baby."
your gaze flickers skyward, unfocused and glassy. mindless. (always thinking, aren't you, baby? he's happy to help you turn it off, if you'd let him. happy to strip you down to something soft, something malleable in his graspâsomething that belongs only to him. itâs only fair. itâs what you deserve). a dark chuckle rumbles from his chest, sharp with satisfaction. (yeah, you'd like that, wouldn't you?).
he gives you no warning before taking hold of your hips, molding your lower body in a high arch, and sinking the rest of the way in.
"jakeâ!" his name leaves you in a breathless sob, a prayer, a curse, a requiem. you're nearly catatonic, twitching like youâve been electrocuted as you spasm beneath his hands, the girth of him infiltrating the marrow of your bones, the lining of your ribs, the edges of your lungs. the dull ache in your stomach intensifies as his hips rut up, your head smacking against the ground as his ridged cock rams lecherously into the spongy entrance of your cervix. jake punches out a strangled laugh as your stomach mounds obscenely (frighteningly, if he were being honest with himself) to accommodate the sheer size of his length, a shaky hand reaching forward to feel for himself underneath your layers of quivering muscle. you jolt with a sharp cry, feet kicking helplessly in midair as tears spill in shimmering rivulets down your flushed cheeks. âso-â he cuts himself off when your cunt, unable to squeeze around the girth of him, flutters achingly. begging for release. "tight. knew you'd be so fuckin' tightâ"
he doesn't wait. can't. his hips roll forward, dragging another devastatingly thick thrust through the vice-like grip of your cunt, the sensation of him rearranging you from the inside out. his hand slips between your thighs (greedy, insistent), feeling for the slick heat pooling there, brushing over the tender, swollen knot of your clit. he drinks your shaky squeal, chest rising and falling in rapid succession as he folds forward, tongue swiping across your upper row of teeth. "jake,â you sob, a wrecked little thing, hands fisting in his braids, grasping for something, anything. "'m gonna cumâoh god, i wanna câplease, can i, jake, pleaseâ"
"w'me," jake manages to hiss, tongue swirling patterns into the wounded skin of your clavicle. the blunt tip of his cock twitches as his thrusts shallow, a moan purred into the junction between your neck and shoulder. the tightness in his stomach ebbs as the wet slap of your pelvis against his reverberates in the air, a symphony of noise escaping your throat as he fills your womb in thick, unrelenting waves of searing warmth. you sob raggedly in relief, convulsing under the weight of his palms, cleaving lines of deepening crimson in his back. (pretty little thing. so good for him. you'd let him do this every night, wouldn't you? would let him bury himself to the hilt until he flooded your cunt with his seed, would let him turn your pristine skin a splotchy, bruised shade of fuchsia.)
he thinks with his teeth, lovely girl, and you've got such a pretty neck.
note: WOW WHY DID THIS TAKE ME FOREVER?! i was so smut-stumped for whatever reason, so i apologize for the rushed ending and for the fact that i forgot to include jake taking sips of CO2 while he was in an oxygenated lab LOL (the stem girl in me is screaming at them having sex IN THE LAB). this one's for @pandoraslxna!! love always from lani!!
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