Selpats, I am so, so, very sorry for your pain. It is eerily odd how your story mirrors mine...down to the details you posted...even the time frame! I get exactly what you are saying about the disrespect, that is what hurts me the most. It's been almost 5 weeks since I last talked/fought with my x and he cut me off. I find that keeping a daily journal helps me to process this. I refuse to let his obnoxious behavior ruin my self-worth, and don't let your x affect yours! I know 100% that I am better off, but I cannot lie.....I feel really hurt and betrayed, just as you described.
But, you know, whatever he has going on with someone else, it won't be a healthy situation. He's shown that he isn't focusing on his recovery, and from what I keep reading, that has to be the main priority. As Zoso has also said many times "sick attracts sick".
We are here for support, so please keep posting. Hugs to you!!