The message he sent you about getting your wish sounds exactly like some thing my ex would've sent me. Heck, some thing he probably still would today send me. They are the victim. It's all our fault. (Obviously we know better but it sure is a mind trip even though we are fully aware they are wrong).
it is mind boggling how they can go so long without seeing their kids. They really are in their own selfish worlds. But really and truly it's a blessing for you to have him gone when he's like this.
I separated from my ex when my third child was three months old, divorced by the time she was a couple months shy of a year. It's hard but you will be so much happier on your own raising them then with him around.
I hope you have a good support system around you, while all of that sucks about your ex it is super exciting bringing a baby into the world. I hope all of that goes well.