Then the other party best have their unhappy little self in counseling and be trying to unravel what led them down this road in order that it never happens again. Let me add that they had better REALLY want to work out their marital problems, not just be back because the other gig did not work out and still on the lookout for something else outside of their marriage. Let me also say that this was the situation I was in after 15 years of marriage and that I was the one who cheated. It actually made our marriage stronger (though I am definitely not advocating cheating here!). My husband and I both attended marital counseling and worked hard to overcome this. It is 10 years later and we have never been happier!