Spouses - Confessions

I am down. I have no strenght at all. My husband has been watching porn for a long time, way before we actually got married. We thought that all the problems would just go away when we finally have sex after the wedding. But they didn't. My husband was lying to me constantly about not watching porn, and then confessing to me again and again. He's been clean for about 2 months now. But what he told me last sunday, was even worse. He told me about having some feelings for the girl he was once in love with and is considering a divorce to go and find her and start a new life ;( He hasn't seen her for like 6-7 years and they had never been a couple. I don't know what to do and I need some help. He doesn't understand that the thoughts of happy life with her are just an illusion, just like porn is an illusion of great sexual freedom. His relationship with God has been weak for the past several years so I can't even tell him that it is his christian duty to be faithful to me. He said he does not want to be like a cow that is told what should be done, that he wants to have control over his life. I really need some prayer... I can't stop crying.