HI MrsG
Im glad you have a good holiday, at least.
Im not sure what happened last night? I suppose it was the heightened tension and emotion of seeing him for everyone.
I do think that it is a good idea to negotiate that he plans any visits to the house, giving you time to prepare. You dont just turn up at his, do you?
I think it must be the hardest thing for a couple where an unfaithful person moves out, has their separate life and home, and still tries to treat the family home as though it is theirs. It just doesnt permit you to make it the safe haven from stress which you need it to be.
I wonder if you are trying to over think his motivations for doing this?
He did it because he was cowardly and selfish, and he thought the OW could help him mend the hole in himself. Of course, he is right to the extent that she was a temporary distraction, as all new relationships are, but it is just that. His misery is still there, below the surface. The OW cant fill that hole, you couldnt, and alcohol couldnt.
It is extra hard in some ways, as he pretended all was normal at home whilst he started it up. But you can explain this. I am willing to bet that you have provided so much care and emotional support for him over the years that he did not, on any account, want to lose it. You finding out has wrong footed him, as he wanted different things from both of you, and was getting them until then.
What he wasnt of course thinking about was what he was or should be giving back, because he wasnt, it isnt in him.