A/N: I think this is the longest chapter yet! Thanks for reading, and enjoy :)
This week's bar is a karaoke bar. Kurt hasn't performed in a long time, not even in a place like this, and for a while he'd kind of forgotten how much he loved it. But when Sebastian suggests they get up and sing a duet together, he doesn't even need to think about it before he's agreeing and tugging Sebastian along to pick out a song.
They settle on The Police's Every Breath You Take, which isn't Kurt's usual style, but it's one of Sebastian's favourites, and most of Kurt's top choices aren't exactly the type of song you find on the machine at a standard karaoke bar anyway.
It's a show that, quite frankly, the karaoke bar isn't worthy of. Their chemistry is electric, they play off each other so well as they circle each other on the stage and volley verses back and forth. He's missed it, the feeling of an audience's eyes on him.
He tries to convince himself that it was the audience's eyes – not Sebastian's – that was his favourite part.
Kurt is surprised at how good Sebastian's voice is, he didn't know the other man could sing, but afterward they're talking and he learns that Sebastian did show choir in high school, too, and they were even at Nationals at the same time one year, it's a wonder this has never come up in conversation before now but it hasn't, and Kurt can't help but feel like this is the universe trying to bring them together.
"You think the universe is trying to bring us together, do you?" Sebastian asks, amused, whiskey breath and crooked smile.
Kurt hadn't realized he'd said that out loud.
He feels his cheeks flush, takes a sip of his own drink to buy another moment of time. "Did I say that out loud?"
Sebastian laughs lightly. "Yeah, you did. Maybe you're right, though."
"I am?" Kurt asks dumbly. He's not at his most eloquent, but what's to be expected after several drinks and an intoxicating karaoke performance?
"Well, I can't imagine we'd be doing this if the universe hadn't forced us together, can you?"
Kurt watches Sebastian as he speaks, watches the hard line of his jaw working, watches the way his eyebrow arches with the question. He's always known Sebastian was attractive, but there's something about him here, right now, that's somehow particularly stunning.
Or, Kurt thinks, it might just be the liquor.
"I suppose not."
He moves to take another drink, but when he tips the glass to his mouth, there's no liquid there. He frowns down at the empty glass, eliciting a laugh from Sebastian.
"I'm getting another drink," he decides, standing too quickly from the stool he'd been perched on and tripping forward.
For a man whose drank just about as much as Kurt, Sebastian's reflexes are quick, and he's up and clumsily catching Kurt before he can connect with the floor. His arms are wrapped around Kurt, and Kurt wraps his own around Sebastian as the other man helps him straighten up.
"Maybe you shouldn't get that other drink," Sebastian suggests.
They don't move, stay in place with their arms around each other, breath mingling between them.
"Maybe not," Kurt breathes.
He doesn't know what comes over him, knows it's a bad idea even as he does it but he does it anyway, tips his head up and presses his lips to Sebastian's. He pulls himself up, closer, parts his lips as he feels Sebastian kissing him back. It feels like an eternity, standing there in the crowded bar wrapped up in each other, his fingers snaking through Sebastian's hair as the kiss deepens, and it feels right, so right, right like nothing has felt in so, so long.
They break the kiss, finally, pull back and Kurt's eyes flutter open. Sebastian is flushed now, too, eyes blown wide and he looks… confused. And of course he's confused, of course he's confused, Kurt just kissed him and Kurt is married and Sebastian knows Kurt is married and this isn't right it's wrong, so wrong, wrong like nothing has felt in so, so long.
"Kurt, I–" Sebastian starts, but Kurt is already pulling away.
"I'm sorry, I shouldn't have– I can't, um– I have to go." Kurt stumbles over his words, stumbles over his feet as he backs awkwardly away, embarrassment and shame and guilt – oh god, Blaine – washing over him as what's just happened sinks in.
"Kurt, wait," Sebastian tries again, following after him.
"No, I just– I can't. I can't," he stammers, words tumbling from his lips as he rushes to find the exit.
"Please, Kurt, just stop and–"
"No." Kurt whirls around to face Sebastian again. "No, I'm sorry, but I need– I need to go home. To my husband."
Sebastian doesn't seem to have a good response to that, just sets his jaw and looks back at Kurt with an unreadable expression.
"I'm sorry," he says, one more time, before he's turning and pushing past the rest of the crowd to the exit.