first let me tell you that I'm extremly sorry that you're going through such a difficult situation. And I don't intend to shrink my part in the pain my h's LBS had to go through - my mere presence was part of the package, and it certainly influenced his choice. I understand the anger, the pain, and the need to lash out. I'm sure my h's ex-wife felt all of these emotions. I'm glad, very glad in fact, that she was able to overcome them and forgive me for my part in it, mainly because it was very important for the children, who of course were aware of the tension between us. They're breathing much easier now, knowing they are free to love both their mother and their dad, and that none of this is about "them".
You ask if there was anything my h's ex-wife could have done to make me stop seeing him - like I said to Livnlean, if she had said she wanted him to stay and work on their marriage, I would understood, and left.