TVS in my experience MLC affairs can take a long time to die a natural death, because they aren't really like other affairs - google Frank Pittman for his wise articles on adultery.
The MLCer is using the OP (or OPs) If this affair ends there might be another. We tend to see it as the OP but it isn't, it is our spouse who is using sex like a drug of choice. Your h might even be getting high on the secrecy, sick as this sounds.
It is up to all of us how much we tolerate. For myself I wish I had tolerated less, and stood up for myself more. Easy to say with hindsight, but just my 2 c.
