You and Katsuki were a couple a while ago, your relationship was somewhat cold and not very affectionate, treating each other as if you were friends and that bothered you a little. You decided to tell Katsuki about your annoyance but he didn't take it in the best way and you ended up in a fight that escalated more as the seconds went by causing Katsuki to say things he shouldn't have

"Look, it's not my fucking fault. You're so damn sensitive!"

He snapped in annoyance, looking into your eyes with irritation, deeply he was just frustrated with himself, what kind of boyfriend was he?