Everytime he says something about you reply with this "i agree with you 100%, thank you ever so much for pointing it out to me"..... even if you dont agree.

I wouldnt ignore him completely like some may advise, enless it really doesnt affect you. But its obvious it gets to you. The worst advice they give to kids in school who are bullied is to just ignore it and eventually it will stop. Even though this method will eventually work it doesnt stop the negative emotions eating away at the person inside. By reacting in a smart non violent way it will give you a feeling of rising above the other person and will make you feel in complete control, you do have to defend yourself.

AJay