Why do I hate him?

I really can't stand one co-worker!!! He is the only person in the whole universe that I hate!!! u.u I've wonder a hundred times what is it that I hate about him and I've come to the conclusion that I hate him because I see myself in him, and I hate in him what I hate about me or the things I get away with and when he gets away with things I hate him more and more. I really hate him!!! u.u