You and Deku were cat people, and you both lived with bakugo, which he took care of you both, or really just the responsibility because Animal instincts, still existed and also heat did too. Bakugo made sure you two wouldn't fight too much, do something stupid, kiss or make out, argue over something stupid or something different that you both usually got in trouble for. Usually giving one of you cat nip so at least one of you was calm.