Title:Undisclosed Desires
Author: AoiTsukikage
Rating: NC-17 for this chapter
Characters/Pairing: Finn/Kurt/Blaine, in all combinations.
Chapter: 19/20
Word Count: 1956
Spoilers: Let's say everything to be safe :)
Summary/Warnings: From a tumblr prompt. Blaine and Kurt are both having secret affairs with Finn while trying to keep their own relationship from falling apart. But not everything is as simple as it seems, and nothing can stay secret for long.

Disclaimer: Not mine. I wish it were, but if it were Glee would devolve into some giant orgy and that would be horribly unproductive in the end…

Undisclosed Desires

Chapter Nineteen

Finn doesn't know why they need him home early, but he comes back from the gym, body still gleaming with sweat that cools quickly in the brisk air, and pushes his way into the condo to find it dark.

"Dudes?" he calls, wondering if maybe he'd heard the time wrong or something. "Kurt? Blaine?"

"Hey," Blaine comes out of the washroom, wearing nothing but a towel wrapped low around his hips, curls still shower-damp and arms crossed over his chest. "You're all sweaty. Kurt will kill you if you come into the bedroom like that."

"Dude, isn't the point of…whatever we're doing just gonna get me sweaty anyway?" Finn's figured out what's going on by now and his flippant tone is just to cover the fact that his heart is pounding in his chest.

"It's different to him. Don't ask," Blaine rolls his eyes and Finn has to grin because yeah, it's just a Kurt-thing. "Anyway, shower and meet us in the bedroom, okay?" he moves closer, arm hooking around Finn's neck as he draws him down into a rather dirty, wanting kiss.

Finn tries to grab hold of him but Blaine slips away, nearly losing his towel in the process as he shakes his head warningly. "Not until you're clean, Finn. And don't take too long, I think Kurt's liable to start without you if you do."

That more than anything gets Finn moving and he showers in record time, scrubbing a towel through his hair to dry it just enough that it won't make the sheets wet before he's darting across the condo naked and pushing his way into Kurt and Blaine's room.

"Finally," Kurt breaks away from where he's kissing Blaine, both of them naked but so far it doesn't look like anything else is going on. "Get over here."

"What's going on?" Finn asks hesitantly, although he takes Kurt's hand when it's offered, letting the shorter man draw him down onto the blankets and into a sweet kiss.

"Blaine and I…we want to show you something. We know that you've been…unsure about your place in this relationship, but we need you to know how much we love you and want you to be a part of this for as long as you're willing," Kurt murmurs against his lips and Finn thinks he'll do pretty much anything with the other man kissing him like that. "So we're all going to have a little fun. Together."

"Like a threesome?" Finn's starting to catch on and the idea is more than appealing, making a pleasant burning start to curl in his gut as he watches Kurt's face.

"Exactly," Kurt assures him, surging up to press his lips to Finn's again, and he breaks the kiss after a moment to tug Finn closer, hands spread over his back as he whispers into his ear, "I was thinking…him inside me and you inside him? Would that work?"

"Dude, you want me to come right now?" Finn shivers and he can feel Kurt smile against his neck, kissing a spot right below his ear before pulling away. "Yes. God. Yes."

"Good," Kurt smiles and pulls him back on top of him, wrapping his legs around Finn's waist and pressing their cocks together for a moment before crawling away. "So we should do that before any of us get too aroused."

"Yeah, probably," Finn laughs, hearing a drawer close and looking over to where Blaine's shaking the bottle of lube, smiling and Finn wonders how he ever could have thought he was just some body to them. He knows they love him…maybe not the same way they love each other, but it's love and it's true and it's more than enough.

Blaine's slicking up his fingers, getting Kurt to lie on his back as he leans over him and reaches down, sliding one in with ease and Kurt licks his lips and pushes against the touch, Finn watching them for a few moments because they're so in-sync it's beautiful to observe, the way Blaine seems to know what every twitch and sound Kurt makes means, and he's so lost in them he starts when Blaine reaches back to pass the lube to him.

"Oh! Right!"

"You seem distracted," Kurt notes, face starting to flush as he props himself up on his elbows and rocks against Blaine's fingers. "Mm, baby, that's good."

"Sorry, just…you guys are really hot, y'know?" Finn blushes and grabs the lube before coating his own fingers and resting his hand on Blaine's back, the other man spreading his legs and raising his hips instinctively so Finn can more easily prepare him. "Good?"

"Finn, after the way we've done this before? Yes," Blaine promises, eyes fluttering shut in bliss and Finn can see how it would be kinda awesome to have it done to yourself while you were doing it to somebody else, especially somebody as beautiful as Kurt. Not that he's ready to have somebody's cock up his ass or anything, but maybe one day, if things keep going the way they are…

"I'm good," Kurt says a few moments later and Blaine slides out his fingers slowly, hand swiping across Kurt's stomach and leaving glittering trails of lube as he kisses the man beneath him and Kurt sighs and licks into his mouth.

It's obscenely hot, seeing them like this, and Finn almost feels like he should leave before Kurt nudges him with his foot, eyes telling him to stay present.

"Whenever you're ready," Blaine says, looking over his shoulder and straining back as Finn surges forward instinctively to kiss him, holding him steady for a moment. "I think I should…with Kurt first, and then you can…"

"Okay," Finn pulls back enough so that Blaine and Kurt can get settled and they're so, so in unison, Blaine sliding into Kurt's body without the slightest bit of resistance as Kurt whines a little legs splayed out until Finn moves closer and they're so damn long he's got them nearly wrapped around Finn as well, connecting them all while Finn lines himself up and pushes in, Blaine tipping his head back and murmuring appreciatively at the kiss Finn drops onto his shoulder.

"I…give me a minute," Blaine gasps out and Finn can feel his body trembling, meeting Kurt's eyes as the other man strokes Blaine's cheek. "This is just…it's so…"

"It must feel amazing," Kurt murmurs, voice throaty and lust-deep, and Finn hooks his chin over Blaine's shoulder as Kurt presses up to kiss him, both of them moaning at the slide as Blaine whimpers between them. "You set the pace, baby, okay? We'll move with you."

Blaine shivers a little, rocking his hips slightly and gasping and Finn can't even imagine what it would feel like, but since Blaine seems completely overwhelmed he's guessing it's something indescribable. "Dude, you okay?" he asks softly and Blaine finally nods, rocking forward a little as Finn's hands move to his hips to hold him in place.

Kurt smiles at him, meeting his eyes and Finn rather likes this position because he's big enough that he can still watch Kurt even if he's not the one inside of him, and Blaine's warm and solid under him and he drops his nose to nuzzle the back of Blaine's neck, trying to show him that everything's okay.

"I'm good," Blaine finally rasps out, and it sounds like it's an effort to just speak, like his mind is so full of other things that he can't quite concentrate on forming words. "I…"

"You have to move," Kurt rasps, legs tightening around them as his head falls back. "You have to…"

Blaine nods and rocks his hips forward, pulling back after a shallow thrust and Kurt gasps and clings to them, fingers digging into Finn's shoulders and it almost feels like they're pressed together even though Blaine's between them, the three of them having gone through so much up until this moment that being connected like this is nearly a relief.

Finn quickly realizes that he can't move, because if he tries to thrust he'll throw off their rhythm and he has to let Blaine do all of the rocking, pushing himself back onto Finn's cock before shoving forward and it's awkward and ungainly but it works (kinda like them, Finn thinks with a smile) and once Blaine adjusts to it things go rather smoothly.

Finn keeps his head dropped over the smaller man's shoulder, hands firm on his hips as he shifts his body back and forth, and Kurt hoists himself up as best he can to sloppily meet Finn's lips, barely a kiss before he's throwing his head back and writing, hands clawing at Finn's shoulders and God, Kurt in the throes of ecstasy is hands-down one of the most beautiful things Finn knows he'll ever see.

Blaine's body is nearly shaking by now, olive skin covered by a thin sheen of sweat and Finn clamps an arm around his chest as he stops rocking back and just concentrates on Kurt, something Finn's more than okay with because he knows Blaine's close.

He can feel when Blaine comes, his muscles clenching around Finn's cock nearly his own undoing as well, but Kurt moans and tilts his head back, scrambling away as Blaine slides out and looks back at Finn, craning his neck back for a kiss before Finn starts to move, everything familiar now with Blaine but it doesn't take him long to orgasm, gasping as it floods through his body and he slumps over Blaine's back, feeling him shuffled forward and moving with him.

Finn raises his eyes at Kurt's gasp, seeing Blaine swallowing down Kurt's cock and Kurt tangles his fingers in Blaine's curls and bucking up into his mouth for a few sharp thrusts before he's crying out, entire body stiffening and back arching impossibly far, toes curling as he comes and Finn almost feels himself getting hard again just seeing that.

Blaine pulls off with a gasp, looking utterly wrecked, and Finn moves back until he's out, and Blaine collapses onto the bed and starts to laugh almost hysterically, but it sets all of them off and it's kinda weird, three of them naked and giggling on a bed but…

"You were amazing," Kurt sighs, still petting Blaine's curls. "Both of you. That was…"

"Thanks, dudes," Finn finally finds his voice, swallowing and not sure why he's saying what he is but he needs to. "I mean, you didn't have to include me, but…"

"Don't be stupid, of course we did," Blaine flops onto his back, closing his eyes and sighing. "And I think we need to move bedrooms. This is a mess."

"I'll clean it tomorrow," Kurt's voice is low and hoarse with exhaustion and they barely have the energy to make it across the condo to clean up and fall into bed, all of them wrapping around each other and Finn's rarely felt more safe or loved.

"Finn," Blaine says and Finn meets his eyes, leaning in for a soft kiss. "Kurt and I just…want you to know that you're a part of this. With us. For as long as you want to."

"Forever if you want to," Kurt adds in a quiet voice like he thinks that Finn's going to say 'no,' but how can he? He's never felt anything like what he feels for Kurt and Blaine, and even though they might be the real 'couple,' that doesn't mean Finn's any less important to them.

"Okay," he says with a smile, hoping that conveys everything, and from the way Kurt kisses him desperately it most certainly does.

He falls asleep with a smile on his face, thinking that for once, everything's turned out alright.

Notes:

1. I am *so sorry* about the wait on this. It just…wasn't working and finally, *finally* my smut muse woke up and let me write this.

2. Just an epilogue left, guys, but let me know how this was (if anybody's still reading…)