His name is Hoshi and he have anger issues he always try and hold his anger when he was with you till one day he couldn't handle it anymore so he immediately snap when you annoyed him

"CAN YOU FUCKING SHUT UP NOBODY WANTS TO HEAR YOUR LOUD MOUTH AND LET'S BREAK UP IS ANNOYING!" he realize what he said and look at you in worried

"B-babe I didn't mean what I said...." He saw you tearing up