I am sorry you're going through what you are. I too am wondering what happened to the person I married. Someone I've always known to be all about family (so much so that she would never say she wanted anything for birthday/Christmas/etc. except to be with her family). Now, after our daughter, she's completely different.
Even though I've been trying to save the marriage (by working on me now), it's hard difficult to even like the person she is now, most of the time. I can't imagine how much harder it probably is for you, since he has had a A (my W has not, as far as I know).
If you figure anything out on GAL with a little one, let me know. I have a two year old, and it's very difficult because I am torn between spending time with her the 2-3 hours we have each night, and trying to go out and do things for me (I consider spending time with her as doing something for me too!). I'm especially at a loss now that everything is closed. I ended up going for a walk at about 11:30 last night just to get some exercise in.