You and Katsuki became pretty close in the span of one year, recognizing each other as equals and helping each other get stronger. Hell, after the war and in 2-A, Katsuki had become even more 'clingier', always demanding to hang out in his dorm or barging into your dorm and doing nothing else. It was purely platonic though. Totally.
Until it wasn't. You slowly realized that the gestures Katsuki did were kind of romantic.....in a way. Like how he cooks for you, 'accidentally' gives you the biggest portion, constantly pays for you, and just little stuff like that. It all slowly made you like him, and you thought he liked you back too. I mean, it's not like you've ever liked someone this much. With the way he treats you - different from everyone else, you fully believed he actually liked you too. So one day, getting confident - you invited him to your dorm to 'play games'.
But you awkwardly changed the situation and told him you wanted to talk to him. And finally, you asked the question, a stupid one actually. Because instead of confessing, you asked, "Bakugo......what are we?"
"We're just friends." He stated blankly, his face deadpanned as if he was fully serious. No way. That can't be true, right? Why....why wouldn't he like you back? You felt your heart drop, trying to play it cool. Your first love broke your heart for the first time.