We are in an almost identical situation and it's taking its toll on me. I've been married to this wonderful man for 1.5 yrs. Have known him for 4. From day 1, the EX (who has custody of the 2 teen girls) has badmouthed their dad and myself to the girls. She has brainwashed them into believing lies. They have been divorced 11 yrs. She is STILL dating the man that she had an affair with that broke up the marriage. She tells the girls that this is not the same man. I am sure it's because she wants them to accept him. She is so bitter and there is absolutely no justification behind it. My husband is the most loving, gentle man, devoted husband and dad that I have ever known. Not a day has gone by that he doesn't call his girls and try to remain involved in their lives. The rejection he gets from them is so painful. The Ex actually told the girls to their faces that since their dad met me, THEY are no longer as important to him as they once were. What chance does that give ME when they have that hanging over their heads? It's all so very sad. We have done nothing but encourage healthy relationships for all sides. We suggested family counseling with the girls. The EX refused to allow us to use the medical insurance she carries on the girls. Says this is OUR problem. In my opinion, I think we could take her to court because she is legally denying medical care for them. I could write for days about how bitter this woman is. She did not have a successful relationship with her husband, so she seems to hang on to such bitterness. She feels no one else should have a relationship with him either I guess. Such a shame that she is hurting her girls like this. Hopefully one day they will open their eyes and see the truth. I think the EX is just shooting herself in the foot.