I'm sorry you're hurting.
I won't tell you it's not worth trying to make him see the light...I will just tell you that it can't be done. No one can make an addict see the light. It's a place we A's have to find on our own.
The only way I could get past my XABF was to not talk to him. It just hurt too bad, and kept me down. It wasn't easy, but it was the only way I could even think about something else besides him.
This is a period of grief you just have to go through. You're grieving the end of the dream of what you had thought your lives together would be like. If we don't deal with the grief, it will come back to bite you in the a$$.
I hope you can find something else to occupy your mind. Unfortunately, as long as you keep talking to him, these feelings are going to continue.
It does get better, the more distance we put between us and them (especially mentally)...I promise.
Hugs and prayers!
Amy