Should u leave your husband if he doesn't trust you?

I've been married to my husband for 3 years and his trust for me hasn't gotten better but worse. he is a very insecure man who think that I'm too beautiful to be with a man like him. He get jealous when men look at me and he thinks that I prance around when men notice ( I don't because sometimes I don't notice, but he does) I don't do anything for him not to trust me. it's like he is waiting for me to cheat on him because he says that he knows that I might one day cheat on him. I have never cheated on anyone before. We have gotten counselor before but it doesn't help. I feel like there isn't anything that I can do to prove to him that I'm with him and that I love him. I feel like he is going to drive me crazy. He says that he wouldn't be jealous if I was ugly. I feel like he has the problem and not me. He wasn't jealous like this before we got married. Help.