You know, it's hard b/c I'm always an optimist and always think the best of people, but H is being ridiculous! Before I've always suggested to give H the benefit of doubt or one more chance to hear him out, but I don't think you have to anymore, especially if you don't want to. I think you would be completely in the right to keep him out of your house. No matter what is going on between the two of you, you are still the mother of his child and of all the holiday's, this is the one he should have acknowledged. You are an awesome mother and he should appreciate all you've done to raise such a great S. But it's not just about ignoring mother's day, the fact that he was with OW again all weekend, despite his professions of love, change and therapy, I guess at some point enough is enough. If you do talk to him (which I'm sure it will come up), just make sure you try to stay cool, calm, and matter of fact. As much as you want to (and he deserves to) have his head chewed off, just be straightup about why he can't come over to YOUR house anymore.
For S's sake, I think it's important to keep that relation going with his other grandparents (so doing pizza, going over in the summer, etc). And so sorry to hear how exhausted you are. Hope S is feeling better so that you both can get some good sleep tonight!
Me 27; H 28; S 2 Togeth 9; M 4 Sep 11/14/08 EA OW1 Sep 08 EA OW2 Mar 09 EA OW3 Jun 10