It is a personal choice. In Divorce Remedy, there is a short sentence where Michele says if a WAS refuses to end the A, get a lawyer and consider your options.
You can only confront so many times! After that, the ball is in your court. Confrontation, in itself, doesn't solve anything, and obviously doesn't mean the end of an A or wayward lifestyle.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!