1) He needs to handle his financial responsibilities to child support. I'd tell him so.
2) I would be nice about it, but tell him to take the kids somewhere for visitation. If you choose not to do that, look good, smell good, be happy, and then leave him with the kids while you go out without explanation. Let him draw his own conclusions. He'll start to worry you are seeing someone else.
3) Don't be all gushy around him. Show him your good side, but be more indifferent. He needs to feel that he's losing you (and he should feel that, you don't have to wait in limbo for him to get his head out)
4) Continue to focus on what's best for you and making yourself happy. He needs to sort himself out...you can't do it for him.
