He's angry, not at you, but at the entire world and yes, the biggest one...himself. Just leave him alone. If he wants to see the kids, fine...but you don't have to participate in the visits. It's time to step back and allow him alone time w/the kids and you do something for you. It's time he begin to realize that w/a divorce things change. It's time for you to keep that focus on you.
He's not ever going to miss you if you are always there for him. Let him go. He needs to grow up and learn to appreciate what he had and lost.
You are far too much living to do to be playing "mom" to this man child. Your world has been rocked, but it's been rocking for some time w/his back and forth relationship. You need to your balance and begin living your life for you.
Keep the focus on you and allow your h to twirl in the wind by himself.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.