It's mostly the fault of @loveliesblood, because of course it is, but we had this discussion yesterday about the thought of Vegas being drunk out of his mind, and instead of being depressed or more self-destructive than usual, he just gets incredibly sappy.
Like, imagine him being wasted and cuddling Pete, pinching his cheeks as he frowns in his attempts at seeing his face more clearly because the image is too blurry, all while Pete is trying to move him to the bathroom or to their bedroom. Vegas calls him boyfie or something similar in English, and Pete is so flustered and soooo confused and he has no idea how to handle a Theerapanyakul who won't punish him for being left to drink this much. And of course, there's also Macau behind them, whining and gagging and asking his hia to stop being so cringe, all while helping Pete take care of him.
(He honestly wants to cry by how happy he feels seeing his brother like this, but he'd rather die than admit it).
AND, obviously Vegas wants to kiss Pete, and keep kissing Pete, but Pete has to stop him because "your breath smells, Vegas," which makes Vegas get upset because "I'm sorry, I kissed you when you hadn't brushed your teeth in days, do you not love me?"
Pete can't answer the question, so he just lets Vegas do what he wants. He'll have forgotten about this in the morning anyway.