Sometimes in relationships people tend to get into a power struggle once the romancing is over, or deminishes. When the relationship is at that point it becomes difficult, sometimes impossible, for the male to give in to his mate because he might feel that he is the head of the union, and needs to keep a strong front. But that is only one point of view. There may be other issues which could cause that particular problem. However, the problems wouldn't go away without some attempts to resolve them. I believe you should both confront "the problems" and work them out together.
If a man is not the confrontational type, his first action would be to seek out someone else that he could get along with, and is easy to talk to. If you can't take the time to work out your problems, then seek out a professional. I would suggest Mediation.