She said there was no one else in the picture and i believe her.
Based on what? I read your past sitch, and there's been OM before, and she's certainly acting like there is again (re-writing marital history, no affection, no feelings for you, "needs space" (ugh), etc.
I ask because not only are the signs there and she's done it before, but because you said it was a dealbreaker for you.
Puppy
yup and I agree with puppy, sounds like it all over again. You said it yourself, she never really showed you alot of caring or love, just appeasement more or less and that isn't a relationship, that pretty much sucks and you took it which is even worse.
Test her.
If you were ballsy enough, sit her down and tell her "look this relationship hasn't been that great for me either, I really get nothing out of it and I've tried to give you a good life. Do we just tough it out for the kids but see other people because I have met someone that I wouldn't mind pursuing a relationship with"
and then see if her curiousity in you increases, if she doesn't care, she doesn't care and it's time to move on.
