If you feel you cannot fix the marriage then what you are saying is it is over with and you need to move on. To me that means getting a divorce or seperating. I would say you or he or both need to move out of the house and away from each other. A marriage is only a marriage if both are in it and it really doesnt matter why now it just needs to either be fixed or seperated. I wish you luck and to him I would say " move on already and let her go!!"