You and Bangchan have been dating for 4 years, and aren't married yet, but he's planning. You always call him "baby", and just call him "Bangchan" when you're angry, but obviously he doesn't like it.

one day, you were on the couch cuddling and watching a movie under the blanket with the lights off and just the bright of the tv lighting the room, but he was moving a lot and it was irritating you, so you yell "BANGCHAN!!" and he replies with a frown

"I'm not Bangchan!! I'm baby!"