If I were to speak badly about Ed around the kids, I do believe that I would be hurting them. They would also get a sense from me that I hold resentment and I would rather demonstrate that it is better to move forward and not focus on the past. They love him, but they also know full well that I am their real father. It was a giant leap to put some faith in the old guy, but it is working out well so far. I do know that he was estranged from some of his own sons (who I think are older than my XW) but that he has redeemed himself in his later years. But I also am not buddies with him as he is a dishonorable wife stealer.