Also wanted to say, it's great that your H is so keen to have you back, but make sure your needs are met too. It might be helpful to go back for a 'visit' for a defined amount of time, and have expectations really clear e.g. is he expecting you to do all the child care; how will you manage your children's emotions...? It might also be helpful to have quite a detailed plan of how you will spend the time (e.g. a family activity) and also a way for either you or your H to be able to say 'this was a bit too much too soon' and be able to end the visit without anyone interpreting that as a catastrophic failure. Basically, I think I'm trying to say, plan it carefully so you're set up to succeed rather than 'fail'