Both parties take it hard, but IMO, I think if a guy really, really, REALLY likes a girl, and she rejects him, he takes it harsher than the other way around. Though I’m not a guy, I still think that when guys actually feel, they feel it deep. I don’t know why, but I think a heartbroken girl moves on faster than a heartbroken guy.
(don’t jump on me, since I’m probably wrong).