you and your boyfriend playing who can seduce nerd!armin arlert first â± mdni. lots of sex. reader and jean are freaked out and whipped, armin's a perv but doesn't want to admit it. wc: 2.5k Ë.âŠ
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | Bonus
"Haah, s'good baby so so mmph!" Your back arches off the bed, Jean's free arm pinning you back to the mattress in one slip motion.
You can feel the smile on his face as he goes back at your clit, sucking in lightly, circling his tongue around it without enough pressure. You tangle your hands in his hair, trying to push him deeper into you but the motherfucker is strong enough to just moves exactly how he wants to.
"Jeaaaan," you moan, dipping your head back with a groan.
He's been lapping at your folds for fifteen minutes already, you're sweaty and a little drunk from the few drinks you shared downstairs. Your boyfriend is lost in the way you taste and in the way you flutter.
Jean hums against you in response, the low vibration shooting straight through your core and making your thighs twitch around his head. He doesnât give you what youâre begging for. Instead he flattens his tongue and drags it slowwwly from your entrance back up to your clit, collecting every bit of you like heâs savoring something rare.
âGoddamn, listen to you,â he murmurs. âSound so fuckinâ pretty when youâre this needy, baby. You know that?â
You try to answer but it comes out as a broken little whimper. Your fingers twist tighter in his hair just holding on for dear life. He lets you tug this time, but only enough to tilt his head the exact angle he wants before he seals his mouth over your clit again.
This time he sucks harder.
Your hips jerk up involuntarily and he groans like you just handed him heaven on a plate. The arm he has banded across your lower stomach flexes, keeping you pinned exactly where he wants you while his free hand slides up the inside of your thigh, fingertips brushing the sensitive skin there before two of them nudge at your entrance.
âRelax for me, pretty girl,â he coaxes, voice muffled and filthy against your cunt. âWanna feel how tight you get when youâre this close.â
Youâre already fluttering around nothing, so when he finally pushes both fingers in, curling them just right, you nearly sob. He crooks them against that spot inside you at the same time his tongue flicks fast little circles over your clit and the combination rips a loud, wrecked sound out of your throat.
âThaaatâs it,â he praises. âThere she is. My good fuckinâ girl. Gonna come all over my face, yeah? Wanna feel you soak me.â
The rhythm turns filthyâsucking, licking, curling, thrustingârelentless but never rushed, like he could happily stay between your legs until the sun comes up. Every time your hips try to chase more he simply presses you back down reminding you whoâs in control.
âJean, please fuck fuck fuck, Iâmââ Your words fracture into gasps. Heat coils so tight in your belly you can barely breathe. Your legs shake, toes curling against the sheets.
He knows. Of course he knows.
He pulls back just enough to speak against your dripping folds, breath hot and voice gravel-rough. âGo on, baby. Come on my tongue like youâve been dying to all night.â
Then he dives back in. Sucking your clit into his mouth hard, fingers pumping faster, curling deeper.
Your back bows off the mattress again, a broken cry tearing out of you as you come hard, pulsing around his fingers, gushing against his tongue. Jean doesnât stop. He works you through every shuddering wave, licking slower now, softer, drinking down every last bit of you like heâs starved for it.
When you finally collapse, trembling and gasping, he eases his fingers out gently and presses one last open-mouthed kiss to your oversensitive clit that makes you twitch and whine.
He crawls up your body slow, kissing every inch of skin he passes. Your stomach, the underside of your breast, the hollow of your throat. Until heâs hovering over you, forearms braced on either side of your head.
His mouth is glossy, chin wet, hair a complete mess from your hands. He looks wrecked in the best way.
And heâs smiling like he just won something.
âLook at you,â he murmurs, brushing sweat-damp hair off your forehead before leaning down to kiss you deep and lazy, letting you taste yourself on his tongue. âSo fuckinâ perfect when you come for me.â
"Mmhm," is all you manage to say, closing your eyes from exhaustion.
Jean squints his eyes, noticing something on you right away. "You're quiet today."
"Am I?" You open your eyes, looking at him right in his.
He lets himself rest beside you, head on his palm while the other plays with your nipples. He's always loved feeling them harden in his fingers, kneading your breasts as you're speaking about the most mundane things.
"Yup. You're usually waaay louder." He shrugs his shoulders, taking one of your curls and curling it tighter between his fingers.
"Well, there's at least 30 people downstairs, I don't want 'em to hear me whine for Jean fucking Kirstein," you shoot back, arching your eyebrows with a teasing smile.
He rolls his eyes, not falling for the bait and leaning closer to you. "You're thinking about something, I know it. Jus' tell me what it is."
Jean nuzzles deeper into the crook of your neck, lips brushing the sensitive spot just below your ear.
âYouâre doing that thing again,â he mumbles against your skin. âThe one where your brain goes somewhere else and you forget Iâm right here.â
You huff a small laugh, threading lazy fingers through his damp hair. âIâm literally naked under you, Jean. How could I forget?â
âDoesnât mean your headâs here.â He pulls back just enough to look at you. Hazel eyes narrowed, searching. The playful edge is still there, but thereâs something sharper underneath it now. âSpit it out, baby. Youâve been weird since we came up here.â
You bite the inside of your cheek, debating. The post-orgasm haze usually makes you loose-lipped and honest, but this feels⊠different. Riskier.
He waits. Patient. Thumb still idly circling your nipple like heâs got all night.
You exhale through your nose. âOkay. Fine. But donât freak out.â
His brows lift. âNow Iâm definitely freaking out.â
You roll onto your side to face him properly, sheets tangling around your hips. âItâs stupid. Probably nothing.â
âTry me.â
Another beat of silence.
ââŠIâve been thinking about Armin.â
Jean goes very still. Not angry-still. Just⊠processing-still. The hand on your breast pauses mid-motion.
âArmin,â he repeats slowly, like heâs tasting the name. âArlert. The blond one with the glasses who volunteers at the library?â
You nod, small. âYeah.â
Jeanâs jaw flexes once. He sits up a little, leaning on one elbow so heâs looming just enough to make the air feel heavier. âAnd youâre thinking about him⊠while Iâve got my tongue buried in your pussy for the last twenty minutes?â
The bluntness makes heat crawl back up your neck. You donât look away, though. âNot the whole time. Just⊠lately. In general.â
He lets out a short laugh that doesnât quite reach his eyes. âJesus. Okay. Wow.â
âYou asked.â
âI did.â He drags a hand down his face, then back through his hair, making it stick up worse. âSo what? You want him? Like⊠want want him?â
âNo. Yes? I donât know.â You sit up too, pulling the sheet over your chest like itâll protect you from how exposed you suddenly feel. âItâs not like Iâm gonna go jump him tomorrow. Itâs just⊠Iâve noticed things.â
Jeanâs stare is steady. âWhat things.â
You swallow. âThe way you look at him sometimes.â
That hits. His expression flickers.
âExcuse me?â
âCome on, Jean.â Your voice softens. âIn class. When heâs explaining something and the whole room shuts up to listen? You watch him like⊠like youâre trying to figure out how someone can be that smart and that pretty at the same time.â
âI do not.â
âYou do.â You reach out, brush your fingertips along his jaw. âAnd itâs hot. The way your eyes get all dark and focused. Like you wanna pin him to the nearest wall and see if he blushes as pretty as he talks.â
Jeanâs throat bobs. He doesnât deny it.
After a long second he mutters, âFuck.â
âYeah.â
He flops onto his back, staring at the ceiling. One arm thrown over his eyes. âThis is so fucked up.â
âIs it?â You crawl over him, straddling his hips. The sheet falls away. His hands automatically settle on your thighs (habit, muscle memory) but he doesnât move otherwise. âOr is it just⊠honest?â
He peeks at you from under his forearm. âYouâre really sitting here, fresh off coming on my face, telling me youâve got a crush on the nerd boy Iâve also been lowkey eye-fucking in lecture hall?â
You shrug one shoulder. âMaybe we both do.â
Silence stretches.
Jeanâs hands flex on your thighs. Not pushing you off. Not pulling you closer. Just⊠holding.
âYouâre serious,â he says finally. Quiet.
âI think so. Yeah.â
He exhales hard through his nose. âHeâs so fucking quiet. And polite. And he smells like new books and vanilla or some shit. Itâs infuriating.â
You smile despite yourself. âYouâve noticed how he smells?â
âShut up.â But thereâs no heat in it. His thumbs start slow circles on your skin. âHeâs got those stupid long lashes. And when he pushes his glasses up? I wanna bite something.â
You laugh. âJean Kirstein admitting heâs got a thing for the soft boy in the front row. Never thought Iâd see the day.â
He glares, but itâs half-hearted. âDonât get cute. You started this.â
âI did.â You lean down, forearms braced on his chest, faces close. "But it's not like we can do something about it."
Jean let your phrase sit for a couple of seconds. "How do we even approach someone like that?"
"He probably thinks it's a bet or some fucked up shit like that," you add, biting your lips.
"He might not even like boys," Jean says.
You arch your eyebrows immediately, blinking fast.
"He might not even like girls," Jean fixes, shrugging his shoulders.
He lets out a frustrated groan, tipping his head back against the pillow.
You trace lazy patterns across his chest with one fingertip, feeling the steady thump of his heart under your palm. âWe could just⊠not do anything. Keep it as fantasy. Make love to the mental image and call it a day.â
He snorts. âYeah, because thatâs worked so well for the last month. Youâve been zoning out mid-makeout thinking about him, and Iââ He cuts himself off. âI caught myself staring at his fucking hands in seminar last week. Hands. Who gets hard over someoneâs knuckles and a fountain pen?â
You bite back a grin. âYou do, apparently.â
âFuck off.â But heâs fighting a smile too. His hands slide up your thighs to your hips, squeezing once like heâs grounding himself. âSeriously though. If weâre gonna do this, we gotta be smart. Heâs not the type you just corner at a party and proposition. Heâll bolt like a startled deer.â
âTrue.â You sit up straighter, straddling him properly now, the sheet pooled around your waist. The cool air makes your skin pebble, nipples tightening again under his absent gaze. âSo maybe we donât do it together. At least not at first.â
Jeanâs brows knit. âWhat, like⊠take turns?â
âExactly.â The idea sparks behind your eyes, wicked and fun and just competitive enough to make your pulse kick up again. âWe approach him separately. Feel him out. See if he bites. No pressure, no tag-team bullshit thatâll scare him off. Just⊠normal conversation. Flirt a little. See who gets further.â
Jeanâs mouth twitches. âYouâre turning this into a game.â
âI meanâŠâ You lean down until your noses brush, lips hovering over his. âArenât you competitive?â
His pupils blow wide. âYouâre evil.â
âSay the word and we drop it.â
Heâs quiet for a beat. Then his hands clamp down on your hips, dragging you forward so youâre seated right over the thick ridge of him.
âRules,â he rasps.
You grin against his mouth. âIâm listening.â
âNo lying to each other. Full disclosure after every interaction. What you said, what he said, how he looked at you, if he blushed, if he got flustered, if he touched you even by accident.â
âDone.â
âNo sabotaging. If he picks one of us, the other backs off gracefully. No guilt-tripping.â
You nod. âFair.â
âAndâ His voice drops, rougher now. âIf heâs into both⊠we talk about bringing him in together with no rush.â
Heat pools low in your belly again. âGod, yes.â
Jeanâs thumb brushes the crease of your thigh, teasingly close to where youâre still slick and sensitive. âOne more. Winner gets to call the shots the first time weâre all three together. If it gets that far.â
Your breath hitches. âYouâre so on.â
He smirks, slow and dangerous. âOh, baby. You have no idea how bad I want to watch that pretty boy fall apart under you while I tell him exactly how to touch you.â
You rock down against him once, just to hear him curse under his breath.
âSo,â you whisper, lips grazing the shell of his ear. âWho goes first?â
Jean thinks for a second, eyes flicking over your face like heâs calculating odds. Then he shrugs one lazy shoulder.
âYou go tomorrow. Heâs always at the library after third period, right? Buried in some ancient philosophy text or whatever.â
You nod. âYeah.In the same spot as well, thinks no one notices him.â
âCute.â Jeanâs hand slides up your spine, fingers threading into your hair so he can tug your head back gently and kiss the column of your throat. âWear that skirt you know he stares at when he thinks youâre not looking. Bend over to pick up a book or something. Give him something to think about tonight when heâs jerking off in his dorm.â
You laugh, breathless. âYouâre awful.â
âIâm strategic.â He nips your pulse point. âI share a class with him on Wednesday, Iâll sit next to him. Ask him to explain some bullshit concept I already know. Maybe brush our knees under the table. See if he startles or leans in.â
The mental image makes you clench around nothing. âYouâre gonna make him stutter, arenât you?â
âFuck yeah I am.â Jeanâs grin is feral now. âAnd every time he pushes those glasses up? Iâm gonna picture them fogged up later.â
You moan softly, grinding down again. âThis is gonna be torture.â
âGood torture.â He flips you onto your back in one smooth motion, pinning your wrists above your head. His mouth finds yours, tasting like victory already. When he pulls back, his voice is wrecked. âYou better tell me everything tomorrow night. Every single detail. How red his ears got. If he adjusted his pants. If he looked at your mouth when you talked.â
âPromise.â You hook a leg around his waist, pulling him closer. âAnd you better do the same.â
Jean rocks against you slow, deliberate. âDeal.â
He kisses you again, harder this time, all teeth and tongue and barely restrained hunger.
âGet some sleep, baby,â he murmurs against your lips. âYouâve got a nerd to seduce in the morning.â
You smile into the dark, heart racing.
âAnd youâve got one hell of a competition on your hands, Kirstein.â
He chuckles low in his throat, already sliding down your body again, mouth trailing fire.
âBring it.â
a/n: idk when this came to life but i love this kind of trope in fanfics












