You should've said no.

You realllllyyy should've said no.

Moreover, you should've left Armin's house via Uber and went straight home to your apartment, forgetting that any of the previous actions that led you to this point ever happened.

So then... why was the word 'yes' tumbling from your lips, over and over like a mantra?

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CW: Oral (y/n receiving),

unprotected sex (y/n is on bc),

threesome-ish? (Armin is there but doesn't fully participate), possessiveness? (hardly, but it's there), CHEATING (duh, that's a major part of the plot)

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"Tastes so fuckin' good."

Your head spins, hardly able to control the sounds from your lips, as Eren's are suctioned softly around you clit. He takes a break to admire his handiwork— the way your pussy drips for him has him absolutely feral. His head buries between your legs once more in an instant, determined to slurp up every single drop.

Hands gripping your thighs, keeping you exactly where he wants you as he devours your cunt like a man starved— his tongue flicks against the swollen bud deftly, without missions a beat. The slick metal from his piercing adds a sensation that you can hardly describe, it's different but so fucking good, causing your hand to thread into his brunet locks.

He groans into your pussy as you tug on his hair, pulling him closer as you practically grind yourself on his pretty face. This is exactly how you imagined it, but better— you shouldn't be doing this, but Jean was nothing but an afterthought at this point.

"Gonna cum for me?" He asks— the parallels between this time and the last with Jean are eerily similar, except this time, you can answer honestly.

Before you even have a chance to answer, he plunges a long, thick finger inside of you— green eyes smirkingly examine your fucked out expression, taking pride in the fact that he's got you in this state with his mouth alone.

Soon, he enters one more before returning his focus back on your clit, his hand and mouth moving in tandem to bring you to your high.

"Fuck." He breathes against you, reveling in the way your walls clamp around his fingers— he ruts his hips into his best friend's mattress searching for some sort of friction for his aching cock, imagining how good it'll feel to have his dick inside of you instead.

Just as you're about to reach your orgasm, you hear a light tap on the door. Your heart races for a different reason now, realizing it must be Armin coming back from... wherever he disappeared to.

"E-Eren... the... the door." You try your best to keep your noises to a minimum, but his assault on your pussy was unrelenting.

" 's okay, jus focus on me." He slurs, clearly pussy drunk on your saccharine flavor.

He can feel you tense up,

out of nervousness no doubt— so he stops, removing his fingers and placing the other hand on your thigh, rubbing small circles to help comfort you.

Armin soon waltzes through the door like nobody's business, hardly even fazed by the sight of you sprawled out underneath Eren on his bed.

"Thought you'd be done by now." He teases, a blush adorning his cheeks as he takes a peek at you from over Eren's shoulder.

"Almost was, until you interrupted me." Eren responds, tone border-lining on aggressive.

"Don't mind me," he says, sprawling out on the empty space next to you to, "unless... you need some help."

Bright blue eyes innocently flicker between you and Eren, waiting for one of you to invite him into the mix. After all, he was gracious enough to let you use his bedroom, shouldn't he have a little fun too?

"It's up to you." Eren responds, focusing his attention on your lustful form beneath him. You look so on edge... so needy after your orgasm was ripped away from you. He has half a mind to to tell Armin to fuck off so he can finish what he started, but his main goal right now is to please you in anyway possible...

and if that includes Armin, then so be it. He has a need— no, a want, to prove to you that he can be a better boyfriend than that prick you're with now.

You look at Eren, then at Armin, then back at Eren once more. It's very clear to you now that the devil has two forms— a pretty blonde with ocean blue eyes, and the other, a handsome brunet with haunting green.

They oozed sinful temptation, and be damned, you were under their spell.

"Okay."

You hardly have a chance to register what you've said when all of a sudden Eren's lips are on yours, hands tugging at your body to bring you closer towards him. Armin makes his way behind you, already ridding himself of his shirt and sitting up against the headboard— you feel the skin of your back press against his chest as Eren cages you in underneath him.

They both seem so comfortable with this. You get the feeling that this definitely isn't the first time they've been in this situation.

"Relax— just wanna make you feel good, pretty baby." Armin coos into the shell of your ear, as delicate fingers slip underneath your bra to tease your perked nipples. His touch is so much softer than Eren's, but it feels so good all the same.

You let out a hushed moan as Eren slips his fingers back into your sopping pussy. You're still so wet for him, he figures you're ready to take his cock.

Your eyes can help but widen at the sight of him pulling down his briefs. His dick is just as you'd imagined it to look— long, thick and veiny... flushed and throbbing, impatiently waiting to destroy your insides.

He runs his fingers through his hair, grabbing the black elastic from his wrist and tying up the chestnut strands into a sloppy bun— a few of them escape, framing his gorgeous face. He's so fucking handsome, you could probably cum untouched from the way he's looking at you right now.

"Ready for me?" He asks, cocky smirk plastered on his face as if he just knows that he's about to annihilate your guts. He teases your slit with the head of his cock, coating it well with slippery arousal to make it as comfortable for you as possible.

Soon, Armin sticks two fingers into your mouth, reminding you of his presence— you swirl your tongue around them for a brief moment before he presses them to your clit, rubbing soft circles.

"I'm here to help, remember?" He chuckles, pressing gentle kisses into your neck while his fingers working their magic, as you begin to fall into his touch.

A throaty moan leaves your lips as you feel Eren's cock split you open— he's so deep already, you can feel it as he presses a large hand to your lower abdomen. The pleasure from the pressure along almost makes you cum, especially when he starts a rhythm of shallow thrusts to allow you to adjust to his size.

"Fuck, that's my girl— taking me so well." He mutters, pressing into you further, rewarding you with a kiss for having such an obedient little pussy.

His thrusts become deeper, harder— his hips snap against yours and you cry out for him, your melodic sounds only beckon him further to incite more from you.

You can feel Armin's cock harden as he enjoys the front row seat he's been blessed with. The way your eyes roll back once Eren hits that special spot makes him ache with desire. He wants to feel you too, he wants to find out what pretty noises he can pull out of you, but not this time— he doesn't want to overwhelm you.

Instead, he tilts your head back just enough for him to reach your lips, pressing his soft ones against yours. He doesn't waste a single moment to slip his tongue into your mouth when you moan into the kiss.

You can't help but tighten your velvety walls around Eren's cock— there's so many pleasurable sensations happening at once: Eren's vicious assault on your g-spot, Armin's fingers stimulating your clit and his mouth giving you wet, sloppy kisses.

Oh, you're done for.

"Fuck, fuck — that's it— cum on my cock." Eren grunts, brows furrowed and breath heavy. He's close too— he grips your thigh, hiking it up and into your chest so that he can reach even deeper... if that was even possible at this point.

Armin, being the great friend he is, gladly aids Eren in supporting your other leg, taking your plush thigh into his hand while he scrambles to free himself from the confinement of his pants. His own pretty, pale-pink cock was was already leaking pre-cum, all he needed was a little more friction.

"Gonna let 'ren cum in that slutty little pussy, aren't you?" He says breathily, his voice breaking with the force of Eren's relentless pounding.

Eren moans loudly just at the thought of filling you up, and you do too— in fact, Armin's filthy words are just what you needed to tip over the edge... with that familiar sensation building up in your stomach.

It reminded you of that night in the kitchen with Jean, the first time you ever had a squirting orgasm with thoughts of your hot neighbor.

That very same hot neighbor that was now balls deep inside your cunt.

"Oh, fuck!" You shout in pure bliss as you make a mess all over Eren ... and poor Armin's bedsheets.

Though, he doesn't seem to mind at all. In fact, he seems to enjoy it so much, that he whimpers into your ear as he makes a mess of his own— whiny, cute little moans spill from his lips as he paints your back white with his seed.

Eren presses his chest against yours, the strength and speed of his thrusts start to falter as he chases his high. Releasing your thigh, he brings his hand up to grip your jaw, forcing you to look into his sapphire eyes as he fucks you. He wants you to hear what he says next, loud and clear.

"Gonna bring you home to your boyfriend so fuckin' full of me." He grunts, eyes fluttering shut as he reaches his peak.

"Mine— pussy's mine." He slurs, dropping his head into the crook of your neck as he moans breathily, your pussy milking him for all that he can offer.

Hardly able to form coherent sentences, you bask in the pile of sweaty limbs you've entangled yourself in as Eren's cum starts to out of your dripping hole.

"Yours, Eren...