There is NO DOUBT in my mind that in order to be in an MLC, there is an affair. I feel the affair is the centerpiece of the MLC process. MLC is all about being happy with someone else, remember, the LBS is to blame for the misery of the MLCer. When affairs end is when the MLCer wants to try to come back. Reason being, the illusion is gone of the OP making them happy. Basically, its at that time that the MLCer has to face the music. I feel that if a spouse leaves not in an affair, you are dealing with a WAS, not an MLCer. Just my opinion.