Katsuki your boyfriend wanted to prank you. To get back at you for pranking him so much. You were in his dorm room. It was almost curfew and you had to go. You get up from his bed and go to leave

"I love you! Bye!" You say as your about to leave. You open the door "Bye" He says. Yes. This was his prank. To not say I love you back when you leave