bakugou and deku had a secret relationship going on they'd kiss in private and cuddle and love each other until they graduated

Deku: kacchan it's over I'm marrying ochako your invited

He was heartbroken and didn't know what to do so he lashed out

Bakugou: ARE YOU KIDDING ME!? AFTER EVERYTHING I HATE YOU JUST GO TO HELL DEKU I WISH I NEVER STOPPED BULLING YOU YOUR USELESS!

He crys and walks away making his way to your house