I have read your thread and the only advice I can give right now is stop making yourself so available to him. Don't call or text him unless it's about the kids and if he text or call you about something else and it's not important, let the call go to voice mail and wait awhile before responding to his text messages.
If he comes over to see the kids, say great because I need to run some errands. Even if you don't. But have yourself looking hot when he shows up. Be a mystery to him. Let him wonder what you are up too.
This is what I have done in the past and it worked for me. And I have decided to start doing this again.
