Quoting ♥MamaToSilas♥:" Stop dealing with him. You shouldn't have moved. If he wanted to be part of his kids lives then he should ... [snip!] ... a good relationship when they realize that mom is doing good for herself without dealing with dad's emotional and verbal abuse."
Took the words out of my mouth.
Quit wondering what he is thinking. Screw what he is thinking. All that matters is #1, your kids, and #2 what you are thinking and how you are going to further your life for yourself and your kids. See how I said yourself and your kids only? No him. You are not together. It's up to him to further his own life, and his relationships with his kids, you can't do it for him.
Make it clear to him that you two are only going to have a platonic, respectful relationship with each other about your kids. Keep out of each others business, unless it involves the kids, so much easier and better that way. Your personal lives are off the table.