"Do neither. Lovingly but firmly tell her "I will not share my wife with another man. We've both made horrible mistakes in this area in our marriage, and I can now see the pain and the damage it does, and an affair is no way to deal with the problems we have in our marriage. I'm fully ready to address my parts of this, but NOT while you are in contact with another man. Looks like we both have a lot of thinking to do."
I really like this and it is perfect. I am concerned though that it blocks the possibility of going to the next Retrouvaille session. Does Retrouvaille offer any guidance?