Commitment issues?

I need help and advice, I've been with my boyfriend For 1 month today, but we don't talk often, I get paranoid because of past relationships and being hurt by pricks, but when I tell him he gets upset at it and it hurts us both, I trust him with my life but I'm terrified, I'm not the best looking of girls and he is gorgeous, he could have anyone else but why pick me?i believe he cares and loves me but how can I become less paranoid? (We have known each other ages and fancied each other but only recently got together)