✮ Call Me Back. Reiner Braun
warnings: smut, modern au, mutual masturbation, phone sex, accidental voyeurism, established relationship, light dom / sub undertones, dirty talk.
Reiner was a bit of clumsy man. He'd forget to do the most simple things, put his dirty clothes on the laundry basket, pack up his own lunch, but he'd never forget anything that involved you. You'd been fogging his head since the day you'd said you liked him back. And that wasn't just it, you'd taken up most of his brain capacity since he met you, but lately? It had been less innocent.
You'd been on call for almost an hour and a half, and you were both pretending the group project hadn't already been finished.
You were comfy in your dark dorm room, laptop balanced on a pillow across your lap, wearing nothing but a beige hoodie and a pair of thin black panties that were already starting to stick to you. The shared document glowed on the screen, cursor blinking uselessly.
Reiner's voice filled your headphones, deep, a little hoarse from talking so long. He was probably slumped at his desk in that single dorm across campus, shirtless, those gray sweatpants hanging low on his hips.
"…So if we cut that last paragraph and move the data table here, it flows better, right?" He scratched something down with his pencil, the faint sound coming through clearly. "I can clean it up tomorrow before class. You've basically carried this whole thing anyway, baby. Don't want you staying up too late because of me."
You smiled, stretching your legs out under the blanket and wiggling your toes. "You're too sweet for your own good. But you sound tired. Long day?"
"Yeah." he admitted with a heavy sigh. The chair creaked as he leaned back. "Practice ran very late, then that chem quiz destroyed me. My brain's completely busted. Talking to you is the only thing that's made it better though."
Your chest warmed. He still got that shy little edge in his voice when he said sweet things like that. "Love you, Reiner."
"Love you too." he murmured, softer now. "So much. Alright… I think that's everything for tonight. Get some sleep, okay? I'll text you first thing."
There was the usual rustle of him moving around, the click of his mouse saving the file, then the soft thud of his laptop lid closing.
You heard him stand up, heavy footsteps crossing the small room, the creak of his bed as he dropped onto it. Fabric shifted, definitely him kicking his sweatpants down those thick thighs. A long, tired exhale. Then the unmistakable pop of the lotion bottle being uncapped, followed by the wet squirt into his palm.
Your heart jumped. You knew you should say something. Should clear your throat, or just quietly end the call. But a slow, guilty heat was already spreading between your legs. Curiosity and arousal won out. You stayed perfectly still, one hand resting lightly on your stomach, listening like you weren't supposed to.
Reiner sighed again, deeper this time, like pure relief after holding it in all evening. The wet sound of lotion being rubbed between his big hands, then the slow, slick glide as he wrapped his fist around his cock.
A shaky breath left him. "Mmh… finally…"
He started slow, lazy strokes, like he was finally letting himself unwind.
You bit your lip hard and slid your hand lower, fingertips brushing over the damp front of your panties. You were already soaked.
Another soft sound as his breathing started to deepen. His pace gradually picked up, the wet, rhythmic sounds growing steadier, filling the quiet line. Soft, breathy little noises started slipping out of him, involuntary sounds he probably didn't even notice.
"Ahh… fuck, that feels good…"
You slipped your fingers under the waistband, circling your swollen clit slowly, matching his lazy rhythm while trying to keep your own breathing quiet.
Reiner's breathing got heavier. The bed creaked as he shifted, probably spreading his legs wider, getting comfortable. His voice came out in broken little whispers.
A higher, needy whimper when he twisted his wrist on the upstroke. "…Hmm—oh—fuck…"
His strokes turned faster, messier. You could picture him so clearly: that massive, muscular frame sprawled across his bed, sweatpants bunched around his knees, one big hand clamping down on his veiny cock, the other probably fisting the sheets. His abs would be clenching with every stroke, chest heaving.
"…Mmh—ohhh… so hard for you baby…"
His hips started rolling up into his fist in shallow thrusts. The bed creaked louder in time with his movements. Those soft little whimpers kept falling from his lips, getting higher and needier. He was trying to stay quiet, but the pleasure was obviously taking over.
You pushed your panties aside and slid two fingers through your slick folds. The wet sounds from his end were driving you insane, obscene, loud, and so fucking hot.
Reiner was losing it now. His hand moved faster, the glide turning sloppy and frantic. His moans grew louder, more broken.
"…Hnng… baby… your good boy's so fucking leaky… ahh… dripping all over my hand…"
You pressed your fingers harder, working your clit in tight circles, biting your lip to stay silent. Your own arousal was dripping down your thighs now.
"…Please… mmm—fuck—feels too good… been so pent up…"
His voice cracked, turning into soft, sobbing whimpers. The pace was relentless, wet and filthy. You could hear how close he was getting, the way his breathing turned into short, desperate pants, those constant needy little sounds spilling out of him.
That was when you finally spoke, voice low and thick with lust.
He stopped with a sharp, startled gasp. His hand froze mid-stroke. Then a mortified, trembling little whine that made your pussy clench.
"…Baby…? Wait... you're still on the call…?"
You smiled slowly, still circling your clit as you answered. "Yeah. I heard every single thing. My good boy jerking that thick cock while thinking about me."
He let out an embarrassed groan. "…I thought I hung up… fuck… please don't be mad at me. I love you so much, I—"
"I'm not mad." you murmured, voice dripping with heat. "In fact, I want you to keep going. Let me hear how you fall apart while you think I'm not listening."
A shaky moan tore out of him immediately. His hand started moving again, faster, even louder now that he knew you were listening and getting off on it.
"Ah—ah—thank you… fuck, love you… so much…"
He didn't hold back anymore. The slick, obscene sounds of his fist flying over his cock filled your ears, mixed with unrestrained breathy whimpers and desperate little sobs. His hips were bucking up hard into his hand, the bed creaking wildly.
You matched his pace, rubbing your clit furiously. "That's it, Rei. Faster. Make it messy. I want to hear it."
Reiner obeyed with a high, broken whine. "Yes! Feels so good knowing you're there… listening to me like this… ahh—fuck—I'm such a mess…"
His moans turned into a steady stream of filthy, needy noises. You could tell he was right on the edge again, desperate, trembling, completely gone.
"Go on, baby," you whispered, voice sweet. "Cum for me. I wanna hear you lose it. Make a mess all over your stomach like the desperate good boy you are."
Reiner came hard, with a long, raw, broken cry that sounded like it had been building for hours.
"…Ahh—ah—fuck—baby! Love you—cumming—hnnng—oh shit—so much… ah—ahh—!"
You could hear the thick, wet spurts as he kept stroking through his orgasm, milking every drop with shaky, oversensitive whimpers and trembling gasps. The sound of him falling apart pushed you over the edge right after him. You buried your face in the pillow to muffle your moan, but he still caught the soft, desperate sounds you made.
For a long minute there was just heavy, ragged breathing on both ends of the line.
Then Reiner's voice came back, small and shy.
"…Did I do okay? I sounded so lost in it… but it felt so good when you told me to keep going. I love you… Can we… maybe do this again sometime? Please?"
You smiled, heart fluttering even through the warm, pleasant exhaustion settling over your body.
"Yeah, Rei. We're definitely doing this again."
The call stayed open for another hour after that, quiet, filthy whispers, sleepy breathing, and plenty more of those desperate little sounds from the boy you loved.
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