𝓢𝓸 𝔀𝓻𝓸𝓷𝓰..
Epitome: A slight crush on a gym guy. While having a sweet boyfriend. A crush that turns into mutual obsession. And the guy turns out to be.. your boyfriend's best friend?
Warnings: Smut, very little plot, oral (f. receiving), handjob, clit-play, nipple play (if that is even a thing..idk?) unprotected sex — wrap it before you tap it ya’ll, threesome, infidelity, tension, let me know if I missed anything!!
Pairing: Softdom!Hyunjin x sub!reader x softdom!changbin.
This work contains graphic content (smut) that is not suitable for some readers. Minors do not interact.
You woke up from your dream — which felt a little more of a nightmare. Wait, why was he everywhere in your dreams?
The guy from the gym.
You only saw him once, and now he somehow managed to occupy every single thought in your mind.
This is so wrong. Very very wrong. You had a boyfriend. Kind, smart, handsome, talented. The type of boyfriend every girl wishes for in her life. He loved you, made you feel the spark like you were some kind of a college girl dating for the first time. And yet your mind somehow drifted to the guy in the gym you barely had a conversation with.
His presence was never loud or attention-seeking. Yet whenever someone entered the gym, they would look at him naturally. He carried a certain aura, intimidation, and confidence. Quite a contrast to your loving and sweet boyfriend of three years.
The dreams started slowly, without you realizing it. At first, it was normal. You chatting with him, or some sort of random activity like noticing him in another familiar place.
They later grew.. Inappropriate. Shared close proximity, intimate moments, everything that screamed wrong.
There were a few moments of interaction that fueled your sexually charged dreams of him. Moments that seemed normal for others, yet for some reason made your heart race with excitement because it was him.
The one moment that’s stuck in your head for a long time is about a week ago.
The gym was loud with music, dumbbells clicking, gym-bros flexing muscles in front of the mirror like their life depended on it. Nothing out of the place. Until your gaze fixated on him.
You did not know his name, yet somehow your brain remembered everything about him. How his face scrunched up slightly while bench-pressing, how the beads of sweat dripped from his forehead all the way to his jawline, how his torso strained against the compressed shirt he wore to the gym, how his adam’s apple would bob while lifting heavy weights.
He wore a sleeveless black shirt that day. Unhealthy for your sanity apparently, when his biceps were on full display while you tried — and failed, to not ogle at him.
He was nearby. Existing and drinking water, while you were completing your last rep on the seated cable row. Did he stand nearby to distract you? You wondered. And before you knew it, your hand twisted slightly while pulling the weighed cable.
"Be careful."
He warned, holding your hand gently. He was behind you in an instant to correct your form, close enough to feel his presence, as he guided your grip.
Was he doing this on purpose? Does he correct every other girl’s form so closely?
And while it may seem normal for everyone else, it — once again — was not normal for your mind.
He backed off as soon as he corrected, making sure to keep a good distance between the two of you. After all that intimacy, you thought.
"I'm Seo Changbin, by the way. " He introduced himself.
"Oh. Okay." You shook him off, thinking that you did a good job at acting unbothered.
"Thought you'd want to know after staring at me since the past few weeks."
No shit. What a tease.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
Turns out the Seo Changbin guy was your boyfriend’s best friend.
And oh boy was he a provocative menace after knowing his best buddy is your boyfriend.
The day you got to know it was the day of your doom. Hyunjin, your sweet boyfriend of — three years — had reminded you that his best friend would be visiting and he would be a little late. You were alright with that because you’ve met his other friends before — Chan, Felix, Yeji, and everyone else.
“He might stay for dinner too, so please make dinner for three okay? He’ll love your cooking.” And oh how could you say no to your doting boyfriend? So you prepared dinner and tidied up the house. And to say you were in shock would be an understatement when you saw someone you didn’t want to see, in front of your shared apartment’s door.
Seo Changbin.
The guy you shared glances that spoke too much.
The guy who appeared in your wet dreams.
The guy who knew he was testing your boundaries in the goddamn gym and was enjoying it.
“Uhm..?” You mustered up a polite, tight smile waiting for him to clarify as to why exactly he was at your doorstep at 7 in the evening.
“This is Hwang Hyunjin’s apartment I suppose?” He raised a brow, a subtle amusement laced in his intonation. And thank the universe when you noticed your boyfriend approaching. Changbin followed the direction of your gaze, and hugged Hyunjin just as he saw his friend.
The next few hours were.. awkward. For you, at the very least.
And Changbin liked to poke your boundaries too — which made the case worse. For example, He sat beside you on the couch — closer than necessary, while Hyunjin went to the kitchen to bring wine for the three of you. His arm on the head of the couch, behind you. Not quite touching, but still a presence to remind you.
You didn’t shift away.
That was the issue.
Changbin pretended he did not know you. He introduced himself formally and smiled like it was your first time meeting and seeing each other. It was not.
He left a little later that day, and you knew this was not good. Whatever was approaching ahead was gonna be wrong.
So wrong.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
Hyunjin was not clueless.
Sure, he acted stupid sometimes, but not clueless. And he definitely felt the tension during his girlfriend and bestfriend’s interaction, no matter how chill they pretended to be on the outside. And he was.. not insecure about it. Instead, he found it interesting — like a game. He was so invested in this game.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
Ever since then, Changbin would visit your place often. And you start to get more and more comfortable in the shared space, because he would sometimes stay the night over. For you, it started to become a regular thing. But for Changbin? He was now infatuated with you.
Seeing you in short skirts, tight tops, or just Hyunjin’s shirt with nothing below was making it harder for him to think straight around you. Oh, and he didn’t seem to be interested in fixing the problem.
He liked to have you around. Because you looked pretty. His gaze lingered longer than it should have. Not on your face. And he didn’t bother hiding it anymore.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
The tension grew as days and interactions passed by and he was getting more and more attracted to you. His actions weren’t inappropriate.
They were.. lingering.
Arms brushing even when there was enough space to walk through. A hand on your waist a second too long. Knuckles brushing on your hip-bone.
Enough to make you think about it.
Not enough to make you call it out.
You could’ve told Hyunjin about it. You didn’t.
There were a few moments you wish to not recall. Moments that felt.. As if you were doing something wrong.
“You two seem to get along well.” Hyunjin once mentioned, tone light and playful. His eyes weren’t.
You couldn’t understand if it was a question or a confrontation.
Changbin just smirked at his friend’s statement.
The breaking point was approaching. You felt it in the air. Because every time you and Changbin made contact, neither one of you would drift away. The pull was magnetic, even when your boyfriend was around.
Once you were at the dining table, organizing the flower pot when Hyunjin went out to bring groceries. And Changbin apparently was again left alone, with you.
He called you. You turned around, and he was close. He spoke up with a voice too quiet, too serious — a starking contrast to his sly, light tone.
“You’re not even trying to avoid it.”
“Avoid what?” You questioned back, holding eye contact.
“Whatever we had. Or have right now.”
You averted your gaze.
“He sees it, you know.”
You didn’t know what to respond with. So you opted for the best option — to walk away.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
You and Hyunjin were cuddling one normal evening. All sweets and giggles, he was tickling you, and you were laughing hard. He stopped after a while, pulling you closer.
“You trust me, right?”
A question that lingered in your mind, longer than necessary. Not accusatory, not doubting. Just.. placed. Like he gave you a hint that could unravel all of your doubts.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
“Tell me to stop, and I will.”
Changbin speaks up. He had you caged between his arms, locked. Not permitting you to run away this time. He was close. Leaned closer. Your breaths mingled. You were living your dream — but it was wrong.
Wrong because you have a boyfriend.
Wrong because Hyunjin was in the next room. Sleeping peacefully.
Wrong because this was your boyfriend’s best friend.
The silence stretched like a thin wire about to snap, after being pulled for a long time.
And yet, despite the hesitation visible in your eyes, you closed the gap between the two of you. It was slow, neither rushed, nor confident.
Your lips met his in a way that felt wrong from the very first second — wrong and overdue. There was a brief pause, like both of you were waiting for the other to pull away and end this all.
Neither of you did.
His hand tightened slightly at your waist, not pulling you closer — just enough to make sure you stayed.
That was all it took.
The hesitation cracked.
The kiss deepened slowly, like testing something risky. Careful at first, uncertain, your breath catching when he shifted just enough to press closer.
Your fingers curled into his shirt without thinking, grounding yourself in something real, something you could blame.
You could hear your heartbeat, it was too loud, too fast and uneven — you were afraid he might hear it.
Or maybe that was just your guilt catching up.
For a second, your mind flickered—
Hyunjin.
The next room. Unaware of what the two of you were doing. You should’ve pulled away then. But instead, you kissed him harder. Like drowning. Like proving something you didn’t want to say out loud.
His hand slid slightly, barely there, but enough to make your breath hitch into the kiss. He exhaled softly against your lips, something quieter than his usual teasing—something almost… relieved.
You broke the kiss first.
Not because you wanted to.
Because you had to.
Your gaze dropped immediately, anywhere but him, your breathing uneven, your lips still tingling like they didn’t get the message yet.
And even then, he didn’t say anything.
Didn’t move away.
Just looked at you.
That’s when he noticed.
And when you followed his gaze—
Hyunjin.
He was there.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
You swear a moment ago you were caught by Hyunjin when you kissed Changbin.
How did you end up sandwiched between your boyfriend and his best friend?
Hyunjin was behind you, guiding Changbin through your body. You hadn't drank any alcohol or liquor, yet it felt like you were high, on cloud nine or shit.
You could never in your wildest dreams have imagined that Seo Changbin would be on his knees, just to pleasure you when your boyfriend, Hyunjin caressed you, guiding his best friend.
And yet, here you were. On the edge of the bed, Hyunjin’s chest acting as a support for your back while Changbin took his time to undress your bottoms agonizingly slowly. He was having real fun teasing you.
Changbin removed your shorts first — kissing all the way from your knees to your upper thighs. Stopping exactly near your heat.
“We haven't even started yet bunny, and you’re soaking.”
Changbin spoke up, definitely in a mocking way. You knew this didn’t make sense — they had asked only for your consent before starting. Yet you didn’t care, not in the moment at least.
He harshly sucked a few purple marks and licked it softly, on the inside of your thigh. Oh they would be hurting later on.
All while Hyunjin fondled with your bra-covered breasts. It felt slightly uncomfortable due to the rough material of the pink lace bra inside your top, but the friction was stimulating nonetheless.
They both started extremely slow and gentle at first — no fighting for dominance, just wanting to make you feel loved. But it all started getting slightly messy when Changbin finally discarded your panties haphazardly in some corner of the room.
You were glistening wet under the soft lighting in the dimly lit bedroom. Changbin’s breath fanned over your cunt, the hole fluttering around nothing in response. His gaze drifted up to your face, only to find you looking at him. He maintained eye contact and licked your clit — to which your hips bucked instantly. He wrapped his lips around your bud, sucking it like a candy.
You whimpered in a pitch so high you weren’t even worried about the neighbours hearing you.
Your head was thrown back on Hyunjin’s shoulder, as his hands massaged your breasts. He unhooked your bra and threw it somewhere, pinching both of your nipples and twisting them while Changbin switched from sucking your clit to kitten-licking your entrance. You whined in overstimulation, hands pulling Changbin’s hair while the other kneaded on Hyunjin’s thigh like a cat.
“Hyun.. ‘s too muchh — nghh..”
You whined, to which Hyunjin kissed you. His kiss was soft, gentle, familiar — a contrast to his ministrations on your breasts.
You feel his breathing get uneven every time you let out even a small whimper. You had that effect on him, as per his say.
Changbin pulled away with a plop! sound, replacing his mouth with two of his fingers, and you swear you saw stars when his thick fingers stretched you out in an indescribable way. He curled them, going knuckle-deep, making a “come hither” motion trying to reach your sweet spot.
Your hands were replaced from his head to his biceps — his thick, veiny biceps. Nails digging into his arms, while Hyunjin held your thighs apart, prohibiting them from closing together. You were stuck in the best way possible, and you were loving every moment of it.
“Love how my buddy’s making you feel?”
Hyunjin asked, leaving soft kisses on your neck while Changbin sucked on your nipple. You were too far in the wrong now, and there’s no going back to the rational way. You nodded in pleasure, and just as he reached the sweet spot that made your mind falter, Changbin pulled his fingers out, and you whined in annoyance.
“So desperate for my fingers? Don’t want my cock to stretch you out?”
He teased, and you nodded in ‘no’.
“Who do you want first, me or him?”
Changbin asked. This felt like one of the most difficult questions to even answer, and the frown your face adorned said it all. This was wrong, very much wrong. Yet it felt—
“Say it quick baby. Don’t wanna keep us waiting, hm?”
Hyunjin spoke up, and you pointed at Changbin, with a slight pout on your face. Changbin just smirked, and it was until he removed his shirt that you realised you were the only one naked between two men who worshiped your body, with their clothes still on. Unfair, but still hot.
You reached to unbuckle Changbin’s belt while he removed his shirt, and he chuckled seeing you struggle pulling his belt out.
“So desperate for my cock bunny?”
Hyunjin chuckled at Changbin’s statement, his hands wandering south to mindlessly play with your clit. He was hard, and you felt him throb behind you every time you let out a sound.
Hyunjin. He’s right there—
Changbin was huge, and it was even more obvious the second he removed his boxers. He was not long like Hyunjin, but he was definitely girthy. You reached out, gently stroking in a testing way as the precum oozed out from the tip. He felt heavy in your hands, precum acting as a lubricant. His breathing grew ragged, hips bucking in your grip every time you rubbed his tip with your thumb.
Hyunjin continued his ministrations on your cunt, spreading your labia and entering just enough to make your breathing uneven as quiet gasps left your lips, but not quite reaching the point where you need it.
He didn’t look away. Not even once.
“F-fuck bunny..”
That was the first time you’ve heard his voice crack, and to your dismay, he pulled your hand away.
“I’d like to feel your pussy first, bunny.”
Changbin aligned himself to your entrance, looking up at you to make sure you’re okay. He rubbed the tip to your clit and your entrance, spreading and mixing both of your slicks.
“Bunny, are you sure you want this? Just tell me to stop and I will.”
Changbin checked up, which somehow made you even more wet. You nodded as a ‘yes’ enthusiastically, to which Changbin slapped his dick on your fluttering hole, a brow raised as he looked at you. The eye contact felt familiar, grounding you to the realization that Hyunjin was still here. And that somehow felt more intimate rather than a one-time thing.
“Use your words baby.”
Hyunjin whispered in your ear, licking and biting on the earlobe.
“Yes. Pleaseee hurry, need’chu in me—”
Changbin smirked at your plea, sliding his cock inside you slowly. The stretch hurted slightly, but it was nothing you couldn’t bear.
“Aaah fuckk— oh baby you’re..”
Changbin was losing his control, and you let out a loud moan when he finally bottomed out. He gripped on your waist harshly as if he would go insane from the tightness of your cunt, as he leaned his forehead to rest on your shoulder. You were clenching around him, growing more and impossibly more wet from the stimulation Hyunjin was giving you by his ministrations. Having four hands pleasuring you at the same time was overstimulating in the least.
Changbin pulled out till only his tip was inside you, and thrusted right inside immediately. He railed you, rearranging your insides as he threw your legs over his shoulders, bending forward slightly to reach impossibly deeper.
You were seeing stars, blabbering incoherent words, pleading for god knows what. Hyunjin kept on fondling and playing with your breasts, and after one particular thrust that made you whine in an even higher pitch, he reached lower to harshly rub and stimulate your clit. You were messed up in the best possible way — overstimulated, greedy for more, breathing ragged, whimpering and chanting Changbin’s name — making you cry for more.
“Changbin... nghhh— gon’- ahh pleasepleasepleaseeeeee”
Changbin felt you clenching uncontrollably around him, making him reach his high quicker. All the sass and dominance was forgotten the moment he felt you flutter around his shaft.
“Bunny, fu– ahhh, wait for me? Please– nghh”
His shallow breaths and desperation evident in his voice was what made you reach your climax quicker. You clenched around him, Hyunjin’s fingers working roughly to stimulate your clit, sending shocks of pleasure throughout your body.
He’s still watching—
You came undone with Changbin still inside you, tip kissing your cervix as he chased his high. His thrusts grew frantic, hips stuttering while overstimulating you. Hyunjin slowed his rubs on your clit, riding you through your after-shocks.
“Q-quick bunny. Where?—”
And hearing no response from you, he pulled out suddenly, jerking off as he unloaded white spurts of cum, painting your stomach till your chest. He collapsed on you, breathing heavily as you both came back to reality.
┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈┈┈┈・୨ ✦ ୧・┈
The room felt quieter than it should have—not completely silent, but different in a way you couldn’t quite place. Like something had shifted, and none of you knew how to put it back where it belonged.
Your breathing was the first thing you became aware of, still uneven as your body tried to catch up with everything that had just happened. Then came the rest—the lingering warmth, the closeness, the sudden, overwhelming awareness of where you were and who you were with.
Too much awareness.
You didn’t move at first, not trusting yourself to without making it all feel more real than it already did.
Hyunjin’s arm was still around you, steady and familiar, grounding in a way that should have comforted you—but instead, it made your chest tighten. Changbin was still close, though he shifted slightly so you wouldn't feel his weight.
That was new.
No one spoke, and for a brief, fragile moment, it almost felt like if no one acknowledged it, maybe it wouldn’t exist at all.
Your gaze dropped to a random corner in your bedroom as you adjusted nothing in particular, just to give yourself something to focus on—something other than the silence stretching between the three of you.
“…You okay?”
Hyunjin’s voice broke through softly, careful in a way that felt almost too deliberate.
You nodded a second too quickly.
“Yeah.”
It came out quieter than you intended, like the word didn’t quite belong in the space you were in.
Changbin let out a short breath that almost sounded like a laugh, though it lacked any real humor. You couldn’t tell if it was tension or something else entirely.
You didn’t look at him.
You couldn’t.
Not yet.
Another pause followed, heavier this time, settling into the room like something tangible.
“We should—”
Hyunjin started, but the sentence never finished. It didn’t need to.
All three of you knew what he meant.
Talk about it. Define it. Decide whatever this was.
None of you did.
Changbin shifted slightly, leaning back just enough to create space, and somehow that made everything worse. Because now there was distance, and with it came the undeniable reality of what had just happened.
Your throat felt dry.
“This… doesn’t change anything,” you said, the words leaving your mouth before you could stop them. They sounded wrong immediately.
Hyunjin didn’t respond right away.
Changbin did.
“Doesn’t it?”
His voice was quiet this time, stripped off of its usual teasing edge, which only made it land harder.
You looked up then — another mistake.
Because the both of them were already looking at you. Not confused. Not regretful. Just… waiting. For your decision. Commitment. Anything.
That was the problem.
No one here was pretending it hadn’t happened.
And maybe, somewhere deep down—
You didn’t want to either.
Maybe you wanted both of them.
At the same time.
That’s what made it worse.
♡ Minnie's note: I had to drop this idk yall im hiding behind the curtains now BYE—
Taglist: @binniebb @kloversung @scarlettuce-lettuce @eternal-stay @shadowrealm2010 @mkaybaby4 @fanficwriter5 @atetheluck @navyrec @d3kstar @wolf-eyed-witchh11 @hannibugz @iheartkentonanami @pinkyrec ♡♡
Join the taglist here ⋆˚꩜｡
@minniebitesfr 2026 ©.
