Overdramatic mess

So there’s this guy I thought was cute, and I have feelings for him I guess, even though I won’t admit it. Last year I always caught him staring at me and to this day I’m still confused on why he was staring at me. Now he has a girlfriend, they’ve been dating for a couple of months and they’re obviously happy. I feel guilty for still having feelings because he’s in a relationship.

My question is, why am I still hung up over this boy I’ve literally never spoken a word to? Why can’t I just let go? Why am I being so overdramatic about this?

Update: I’ve had an epiphany, I don’t like him I just like the idea of him. I really don’t know anything about him and, like I said, we’ve never even had a conversation