Hello and congratulations on the birth of your grandchild! Such a happy time and yet a family occasion which is the first of many family celebrations to come... with baggage from the past. Speaking from experience, no one wants a scene. As people age they have issues, especially health issues which often lead to oversensitivity, which in turn can expand into deep emotional issues. The emotional health of everyone is at a turning point here. No one wants to create a crisis where walls are built and the family is divided. If yours is anything like my situation, I survived a stressful 20+ year marriage, with a husband who was impossible to live with, only to enter into my 40s with broken health and almost didn't make it. I ended my marriage just to cope with life. My adult kids could not forgive me and grew distant, preferring my ex with his new super wife. I could not cope with this new family arrangement where I was now a persona non grata. I lived in another city trying to educate myself to become self-supporting in spite of my health issues; and could not see my adult kids regularly. Even my new daughter-in-law was closer to my ex's new wife than to me. I was the outsider. Now I cannot go to family gatherings because she has replaced me with my own adult kids and only grandchild, and now with my daughter-in-law. For mother's day she is honoured over me. I choose to stay out because it would become heart-attack material to be present where I am not wanted. My ex is a deeply religious individual and yet this is not extended to me, the mother of his children. He has taught our kids by his example to put his new wife ahead of me, his children's mother. There must be some kind of lesson in this, not sure where it can lead, but when there is a hurting parent, where there is no support, it leaves an unhealthy pattern of disrespect and ultimately to a family division. Ask yourself this: do you want to alienate your ex from his adult kids? Do you encourage them to be equally loving to their dad? Would you be happy if your ex disappeared from your kids' lives? If he is feeling insecure have you made him feel that way? He has feelings and whether you agree, he has expressed them and perhaps they need to be dealt with in another way with a counsellor. He does not seem to be happy in his life, perhaps is alone without a happy relationship as you have (if you were alone and he brought a new partner how would you feel about that), and most likely feels humiliated about the past. All the best to you and may everyone have a happy ending in this one!