Characters/Pairing: Santana Lopez, Quinn Fabray, Brittany Pierce. Quinn/Santana, Quinn/Santana/Brittany.
Rating: NC-17.
Kinks: [this chapter] Girlpeen, oral, fingering, mentioned consensual sex.
Prompt: Santana and Quinn are fooling around kissing when Santana finds out that Quinn has a G!P (and a rather large one at that). Quinn's never had sex with a girl before but takes to fucking Santana quickly and roughly. Santana tells Quinn that Brittany happens to love big cocks and calls her up.

Notes: I've been meaning to do an Unholy Trinity threesome fic for a long time, and I'm finally doing it. This first chapter is just the Quinntana stuff as set up, and then Brittany will be in the next part. There's some smutty stuff in here, but the real stuff will happen when Britt gets there. Hopefully I'll have that up sometime next week. Enjoy and tell me what you think.

It's Saturday afternoon, and for reasons she doesn't fully understand, Santana is making out with Quinn.

Honestly, Santana doesn't even know how it happened. It's not like she's in the habit of kissing her female friends.

(Well, okay, there's Brittany, but that's entirely besides the point).

And the point is, Santana has no idea how she ended up straddling Quinn Fabray on her living room couch. One minute they were watching some ridiculously overwrought romantic comedy, and the next they were kissing like their plane was going down. She thinks it might have had something to do with the gratuitous love scene that seemed to never end, or possibly the fact that she hasn't had sex in over a week, but whatever the reason was, it doesn't change the facts. And the facts are: she's currently in Quinn's lap and she has her tongue down her throat.

And that's not even the part that's tripping her up. No, it's what she can feel pressing into her core that's got her raising an eyebrow. It's not like she's not used to feeling a hard on during a hot make out session, but it feels distinctly out of place when the person she's making out with is Quinn. Reluctantly pulling away from the blonde, Santana looks down at her in question.

"You wearing a strap on or something?"

Quinn's cheeks immediately flush pink when her brain catches up to how her body has reacted, and she can't believe she was reckless enough to let things get this far. "I-I, uh, I..." she stutters out, desperately trying to find the words to explain to her friend that she's packing. After the disaster at her old school, she had managed to go years without anyone finding out in Lima, but she can't really see a way out of this one. Even if she threw Santana off and ran up to her room until she left, Santana would just hound her until she spilled. "You can't tell anyone this, but I have... I've never told you, or anyone this, but I'm d-different. I have..."

"A dick?" Santana finishes for her, her eyes widening just slightly. She surprised, that's for sure, but also weirdly turned on. The other girl is so damn delicate and dainty, the idea of her with a cock is kind of hot. She knows she should probably be more shocked than she is, and maybe she will be later on, when there isn't an aching throbbing between her legs, but right now, she's just a mix of horny and curious. Blame it on years of listening to all of Brittany's crazy theories and sexual fantasies. After hearing some of that stuff, it's pretty impossible to shock her. "You telling me you've been hiding a dick under those dresses, Fabray?"

Quinn bites her lip and nods, looking away from Santana as she tries to push her off her lap. The Latina doesn't budge, though. "Santana, come on, let me up."

"Nah uh," Santana argues, placing her hands on Quinn's shoulders to push her against the back of the couch. "You can't just drop a bomb like that and expect me to let it go." Shaking her head, Santana leans back a little, grinding her hips down into Quinn's lap and earning herself a moan. "So what are we talking here? Is it, like, normal?"

"I'm a girl with a dick," Quinn quips with a huff, rolling her eyes. "What about that is normal?"

"You know what I mean," Santana shoots back. "Is it normal? Like, can you have sex with it?"

Quinn shrugs. "I guess so. I wouldn't really know."

"Right." Santana clicks her tongue, eyeing the blush on the other girl's cheeks. She can tell Quinn still feels embarrassed, and she's torn between reassuring her and making it worse. "Do you jack off?"

"Santana!"

"How big is it?"

Quinn covers her face with her hands, muffling her groan of frustration and mortification. "Santana, please stop."

"Can I see it?" she asks after a moment, this time there's not a hint of teasing in her voice. Quinn slowly peaks through her fingers and notices the faint tint of a blush on Santana's cheeks now, and the way her pupils are dilated.

"A-Are you serious?"

Instead of answering her, Santana shifts back on Quinn's thighs and leans forward to press a kiss against her lips. This kiss is completely different to the ones they were exchanging just moments before. Those were hot and heated and sloppy, but this is soft and reassuring, soothing. "Trust me," Santana mumbles against the blonde's lips, moving to kiss the corner of her mouth before trailing down her jaw, towards her chest. She places wet, open mouthed kisses across the exposed skin, not missing a beat as she shifts further back until she's standing, a leg on either side of Quinn's lap.

Quinn chews on her bottom lip, her eyes hooded as she watches Santana descend down her body, bending over at the waist as she drops her hands down to rub her hard shaft through the material of her dress. "Santana, you don't..."

"I want to," the brunette answers, her voice husky and thick with arousal. Leaning forward, she kisses Quinn again. "Let me." The blonde pulls away and presses her forehead against Santana's, giving a slight nod. It's all the consent Santana needs, and she flips the bottom of Quinn's dress up, revealing the distinct outline of the blonde's dick through her girly underwear. Santana can already tell that Quinn is pretty damn hung. "Jesus, Fabray," she breathes out in awe, reaching forward to grip her shaft over her underwear, rubbing it slightly. "How the fuck have you been hiding this monster all this time?"

"I have special underwear for school," Quinn answers, even though she thinks it's probably a rhetorical question, her breath hitching slightly when Santana's finger brushes over the head of her dick. Even though her underwear, it feels unbelievable. "Santana..."

Santana ignores her plea and hooks her fingers in the waistband of Quinn's underwear, pausing to look up into green eyes to silently ask permission. When Quinn gives another nod and lifts her hips, Santana doesn't hesitate to pull the underwear down pale legs and freeing the blonde's erection. Tossing the garments behind her, Santana places her hands on Quinn's knees and spreads her legs, getting to her own knees between them. "Lean back, Fabray. I'm about to blow your mind. Among other things."

"Santana, you really don't have to." Quinn's cock is throbbing under the other girl's gaze, but she doesn't want her friend to feel obligated to do anything. She's heard Santana complain about having to go down on guys before, and the last thing she wants is to be an obligation to her friend.

"I want to, Q," Santana assures her again, smiling up at her as she reaches forward and wraps her hand around Quinn's still growing member. Her fingers grip the shaft, and she can feel it pulsating against her palm, and she can't help but grin, the situation totally unbelievable to her still. She's on her knees between Quinn Fabray's legs - which in itself, honestly, isn't that surprising, she's kind of always imagined she's get into Quinn's pants one day - about to give her a blow job. It's a fucking insane thought, but it's reality, and there isn't a trace of hesitancy as she guides the blonde's shaft towards her and wraps her plump lips around Quinn's cock.

"Fuck," Quinn hisses out immediately, Santana's warm mouth feeling indescribable around the tip of her dick. She can't help but lift her hips off the seat of the couch as Santana's tongue swirls around her head, teasing the slit of her cock and eagerly lapping up the pre-cum that's already starting to ooze out of her.

Santana smiles around Quinn's shaft, loving the reaction she's getting already from the usually composed girl. She hollows out her cheeks and slowly slides her lips further down Quinn's length, struggling just a bit to take her size in her mouth. She's bigger and thicker than any of the guys on the football team that she's blown, and it makes her feel weirdly proud of her friend. She figures if you're gonna be a chick with a dick, at least be hung, and damn, is Quinn hung.

The blonde bucks her hips into Santana's face, forcing more of her cock down the brunette's throat and Santana gags just a little bit. She usually hates when guys do that shit, but she knows Quinn's body is just reacting to her mouth, and it's actually really fucking hot. She's always kind of liked it when Quinn got all head bitch and dominating on her, and in this moment, she feels a strange mix of dominating and dominated. With guys, despite how demeaning the act could be, she's always felt in control. She's always been able to control guys with sex. But now, as she lets herself choke on Quinn's length, she can feel some of that control slipping.

Worried that she's hurt her friend, Quinn tries to pull back but Santana quickly pushes down on her hips, pressing her body back against the couch and keeping her in place. She can feel Santana's throat contracting around the head of her dick, the tip pressed right against the back, and she can't believe Santana's taken that much of her for this long. "San..."

Santana holds her position for a moment longer before she starts to pull back, the flat of her tongue running along the underside of Quinn's cock as she retreats, licking her shaft until she reaches her head and wraps her lips around it again. Santana glances up at the blonde's face and sees she's slumped back against the couch, her eyes fluttering closed every time she teases the slit of her cock with her tongue. She watches the way Quinn's face flushes and her chest heaves, and Santana can feel wetness starting to pool between her own legs.

Quinn's thighs are trembling under her arms, and she trails a hand back to wrap around Quinn's shaft again, her palm easily moving up and down her length from the wetness her mouth has left. She almost laughs at the way Quinn immediately responds to her touch, her back arching off the couch as she lets out a high pitched moan. Wanting nothing more than to hear that beautiful sound again, Santana speeds up her strokes, jerking the blonde off as her mouth works her weeping head.

"F-fuck, Santana, I-" Quinn can barely get any words out, and Santana knows she's close. All it takes is a few more strokes of her hand and a flick of her tongue and Quinn's coming.

She's not surprised Quinn doesn't last long - first time recipients never do - but when she abruptly unloads in her mouth, shooting ropes of cum down her throat, she finds that for the first time ever, she doesn't mind. Usually she hate it when a guy doesn't warn her or pull out, but with Quinn, she finds herself eagerly swallowing every drop she's offered. It's not like it magically tastes any better than any other she's had, but it's Quinn, and for some reason it makes it different. As she sucks on her tip, trying to milk the blonde dry, she realizes that Quinn is different. This is different.

Quinn's not a guy.

Yeah, she's got a dick, but everything else about her is soft, and gentle and oh so feminine, and it's perfect. It's less like fucking Puck, and more like fucking Brittany, and Santana doesn't want it to end.

Slowly bringing the blonde down with gentle kisses to her tip, Santana waits until the other girl's body slumps back against the couch before she releases her softening member and gets up from her knees, discreetly wiping her mouth with her sleeve as she drops back down beside her friend. She barely hits the cushion before Quinn pulls her towards her by her shirt and into a sloppy kiss, the blonde's tongue immediately invading her mouth and moaning at the taste of herself against Santana's tongue.

"Santana, that was..." Quinn sighs as she pulls away from her friend, licking her lips. She looks into deep brown eyes and suddenly feels shy. "That was amazing. You didn't have to-"

"I wanted to, Fabray," Santana repeats, leaning back so she can brush some fallen blonde locks back behind her ear. "I already told you, I wanted to. I'm glad I could make you feel good."

Still blushing, Quinn drops her gaze for a moment, "You made me feel amazing."

"Well," Santana starts, pressing herself closer to her friend and taking her hand, slowly guiding it towards her crotch, pausing for a brief second at the hem of her pants before pushing it inside. Her breath hitches as she feels Quinn's fingers clumsily brush against her clit before dipping into her wet folds. "You made me feel pretty amazing, too."

Quinn swallows thickly as she feels just how wet Santana is, her fingers already coated in sticky juices after just a few moments. "Is that...?'

"All you," Santana tells her, still guiding Quinn's hand, helping her fingers run through her slit. "Fuck, Quinn, right there."

She helps the blonde for a couple more minutes until she takes over herself, shifting on her side for more leverage and taking control. She fumbles with inexperience a bit at first, but she's a good listener and a fast learner, and with just a little bit of verbal guidance from Santana, she manages to turn the brunette into a quivering mess in what might be record time.

Santana learns a lot about Quinn that afternoon, and Quinn learns that Santana looks beautiful when she comes.

That's the first time it happens, but it's not the last.

Santana wouldn't say there's feelings involved, but she wouldn't say there isn't either. She's not in love with Quinn, and she doesn't want to hold her hand or anything, but like, Quinn is her friend, and she's beautiful, and she cares about her, and when she takes her virginity two weeks later, she goes out of her way to make sure it's special.

(She learns from her mistakes in how she treated Brittany).

Quinn's parents are away, and they have all night. The lights are low, the words are caring, the touches are gentle, and she even fucking cuddles after. Quinn tells her it was perfect, and she feels really proud of herself for that.

It's a one time thing, though.

Not the sex, they have a lot of that. No, the gentle touching and the soft whispers and all that mushy shit, that's a one time thing. After that night, it's like a flip switches inside Quinn and she turns into this fuck monster. From that night on, there hardly a moment during sex when she's unsure or insecure again. After that night, she takes charge, and she goes from cute whimpers and high pitched moans to hard biting and deep growling, and Santana fucking loves it. She liked teaching Quinn, helping her embrace her sexuality and leading her touches, but this? Santana fucking loves this.

She loves the way Quinn rips off her clothes the second they're alone now and attacks her tits. The way she pushes her against the mattress (or the bathroom stall or the shower wall or the piano in the choir room that one time) and fucks her until she's come so many times she can't feel her legs. She fucks her hard and rough and perfectly, and Santana loves every single second of it. She barely recognizes Quinn when she's hovering above her, thrusting into her deeply with hips that feel like they've been fucking for years instead of weeks.

The sex is amazing, and after hours of vigorous fucking, sometimes they'll just hang out and watch shitty reality television and trash talk Berry, and just when Santana thinks their little set up couldn't get more perfect, she gets a text one night from the other hot blonde in her life, pouting about being bored and asking if she can come over for some sweet lady kisses.

"Hey, Q," she starts with a smile, looking up at the naked blonde that saunters back into her room with two bottles of water in her hands. "You wanna hear a fucking awesome idea?"

So there's a little bit of the set up. Hope you liked it and are interested in the second part, which again, will hopefully be up sometime next week. The rest of the prompt is kind of detailed in what they want to see (position, and sexual act wise), but if there's anything in particular you'd really like to see worked in during the threesome, let me know.