Claimed! (If it's not too late!)
Put ‘Claimed’ in my ask box and I’ll use a number generator to decide what you get:
Maybe today was the day. The day that Jaejoong finally said just a little too much to his dongsaeng’s boyfriend.
Sandeul called him hyung again and it was just too much for an inebriated Jaejoong.
They’d been getting along a bit better. Awkward in the same space of company of course, but it was probably better now that Jaejoong simply ignored Sandeul, rather than taking to staring at the younger man like he could read and control minds, had harnessed some kind of alien telepathy overnight.
“YOU,” he half growls, the sound mumbled because of his drinking, but loud enough to be understood, and yet not harsh at all despite his probable wish that it was. He’s also probably not helping his case when he’s half straddling Sandeul on the sofa, one of his knees digging into a thigh of the younger’s in a way thats actually unintentional. He’d literally just flopped himself over, after Sandeul had attempted to lay a blanket over the drunk porn star, probably thinking he was going to get cold later with his shirt missing.
"Why do you call him-" he has to stop, because he’d said something wrong, and there’s a moan thats half a whine in his throat when he realizes he might sound stupid, and yet he carries on anyways. "Why do you call me hyung to him? Why?”
Yongguk’s not in the living room, probably in the bathroom, but Jaejoong had just heard them talking to each other about him while he’d laid on the sofa. The porn star is under the impression that Sandeul calls him ‘Jaejoong-hyung’ in front of Yongguk as a means to try and keep the peace.
"I don’t like it, you know? You’re not a good dongsaeng talking to people like that… You don’t like me. You don’t call someone hyung when you don’t like them."
The last admission is grumbled and sighed (probably smelling like soju), and Jaejoong’s confusion over their relationship evident on his face, even as drunk as he is.