V.W.
Maybe he's feeling guilty about something, or he's met some one else. Unfortunately, if he's already made up his mind that he wants a divorce there's not a lot you can do to stop him and if he really isn't in love with you anymore then there's not much point to try. But I agree with Dee T., make him file for divorce... Don't do it for him. Don't do anything to make him think that you want the divorce, and if you really think that there is a chance he is still in love with you keep trying to talk to him. Keep trying to get him into marriage counseling. Keep showing him how much you still love him.