I'm physically attractive but I lack confidence, help me out?

I am not really hot but I am handsome but I have a lot of insecurities on the one hand and the other I like to be an arrogant guy. I am kind of like Hugh Laurie in House M.D. and I don't trust people but at the same time I need social contact to be happy even though I make others angry. I want to have a girlfriend who understands me and just wants to have but not get attached to me but how do I go around finding these girls, my looks don't cut it and I hate most people.