He could treat you better. Yeah, him. Because even though he was explosive and grumpy, he’d never hurt you or make you feel like crap. That’s what he thought every single day whenever he saw you or heard you talk about your boyfriend—that manipulative idiot who had made you cry way too many times.
Katsuki had warned you from the start. He never liked the idea of you dating someone you barely knew. But when he started noticing your mood swings over the past few months, his patience wore thin. If it were up to him, that guy would’ve gotten what he deserved already, but he held back for you.

One day, you were sitting in the common room, looking down. Katsuki walked over and plopped down next to you, not bothering to hide how annoyed he was. He knew that look on your face.

"What’s wrong? Let me guess, your pathetic excuse of a boyfriend did something again?"