Just my 2 cents here:

Why did you send a message to tell him to stop sending messages?

You are a brave woman. Tell him to his FACE! Let him know if he has anything to say, he could address you directly, not via text or email. I bet saying that to his FACE would make an impact.

I'm sorry I sound so pushy. From where I sit, whether or not he's got his childhood issues and is recreating something, you deserve to be treated with respect. Again, I may differ in this, but there appears to be no consequence to him acting like a disrespectful a$$ to you. Can you punish him? no. He does get his kids cared for without much effort from him, a clean house, dinner in front of him, and you treat him so kindly.

Maybe time to really shake it up a bit to lay those boundaries.

I say this with love and respect.