What I'm saying is that I don't know if I would get over his choice to not be there. There is no need for me to go into it here but I was always there for him and his children in ways I never should have to have been. His XW did some really crazy stuff to me personally, to my H and to his kids. He knows, his family knows and even when he BD me the first thing out of his mouth was the very fact of how vital for him with his kids when we were together (I will not go into it here but it was a very horrible situation for my H)
This is just perplexing to me. Your H fired you and shacked up with another woman. That's not a deal-killer for you, but if he doesn't attend his step-son's graduation then that is a deal-killer? I mean I'm not excusing his lack of interest in attending, I've already been clear on my thoughts on that and his selfishness. But why are you randomly drawing a line in the sand over it? I mean if that's a deal-killer then you should really just be done and move on because he's done far worse already.