In a way it's like your a saftey net for your wife, have less contact. Get out and do things with other people let her think your moving on. This will probably make her angry at first, but than start working on being friends. Eventually she will get tired of OM, and guess who will be there for her when she needs someone. In a way it's like beating the OM at his own game. Oh, if W wants a divorce let her file, and do the work. She is probably still confused and OM will presure her for it and it may make her tire of him quicker.