I have had the experience you are asking about. My husband cheated on me over 25 years ago. He got involved with someone at work that was older than him. It was pure hell going through it, not even knowing at first what was wrong with him. He was cocky, arrogant, and full of excuses. He lied and said he was working, going to a friend's, lots of things that were totally out of his normal character. I was beside myself with stress and finally asked him to leave. I told him I didn't know what he was looking for, but it wasn't with me and our kids. He was furious at first but did leave. After a few weeks I asked him what he was going to do, and he admitted then that there was someone else. I told him to get out and stay out, that I was going to file for divorce. He was out for a month, and then came back begging to try again. I reluctantly took him back in, but it was pure hell. I immediately felt disgusted with myself for taking him back, and was very indifferent to him. We made a promise not to ever talk about the affair again, but it took me three years to finally feel comfortable with him like we were before. The other woman didn't want to let go without a fight, but I told my husband that if I had to fight for what already belonged to me, then I didn't want him. He offered to go to counciling, but lied to the councilor out of embarrassement, so that was a waste of time. It took a while for the woman to realize that he was not going to continue the relationship, and during this time I kept my divorce papers open, which terrified my husband. I told him if he ever tried it again, we were done. I took no more crap or lies from him, and slowly he tried in every way to show me he was sincere. It's a long hard process, and finally almost 18 years later, at our daughter's wedding, he admitted fully to me how sorry he was for causing me so much pain. It was then I knew how he really felt, and how much pain he had been in himself. We have been married for 36 years next st. Patrick's day, and it was worth the effort to stay together. Not to say that the hurt has gone away, it never will. But you can't take someone back unless the are absolutely wanting to come back, and are willing to do whatever it takes to prove to you they are sorry for their actions. It's a hard, slow process, but if there is real love there, it's worth it. The main thing to remember is to not bring it up once you make the committment to stay together. I wish you the best with your wife, but you will have to determine when and if she wants to stop her affair whether she is sincere or not, and if she is not, then you have to be prepared to make the decision to get out and mean it! If all you do is bluff, then they will keep cheating. Good luck!