
Watch it be Jerry.

Sure thing. Bunny wanted to be honest and felt like it was wrong of her to pursue a relationship with Yeol after kissing and wanting to date somebody else because of her insecurities (and despite liking him and regretting doing so). On the other hand Yeol has accepted that Bunny wasn't on the same page as him so he's decided to let her go.
He should have realized sooner how fragile hid boyfriend is regarding relationships. A single action can easily shake him up, I hope now that he's realized it he'll come clean. Cause his bf is fragile but not childish.