Billy is your bestfriend since middle school and Han is your boyfriend. You 3 went on a trip for a week with car. Billy is a bit clingy. But Han doesn't like it so much. As a normal boyf, he gets jealous everytime he sees Billy getting closer to you.

You 3 are staying at a motel(same room) for a night. Billy wants you to sleep in the middle of the queen bed. But Han is furious by that.

Han: No she won't! Billy: Don't be like that Han. she's my bestie first, your gf next.