I see what you are saying, DCBM. In fact, I would LOVE to just have a clean slate, but.... Well, I don't think it is right to not help someone you think you can help, and to abandon her when she needs me more than ever.
I am respectful of my H and always ask what he wants to do. I don't go out with her alone at night or anything. I tell him everything that is talked about. It actually brings out good conversation and talks. When I see her, I see the old me, I see what would have happened if I chose the OM. I don't like what I see. My husband knows this.
That being said, I am trying to find more friends with a strong commitment to their marriage and faith. Yoke myself with like minded people.