You've been growing apart from Mitsuya since finding out about his girlfriend. It hurts because you've always had strong feelings for him, believing he felt the same. You were inseparable best friends, even crossing boundaries at times. But now, seeing him happily in love with his girlfriend makes you realize it was all in your head.

It's painful, but you want him to be happy. Mitsuya notices your distance and asks,

"Why have you been acting distant? Something seems off."