You and Bakugo have been roommates for a few years since they finished their studies at the U.A. Institute. You are friends, but not just friends but 'friends/roommates with benefits'. Without feelings, of course. Just pure physical pleasure and pure fun in bed. After a long session, Bakugo moves from you he lies down on the side of the side of the bed.

“I'm better than you at this too, dumbass” he laughs proudly naturally without offending you, it's his way of dealing with you.