I am so hurt he chose a girlfriend over sobriety and his daughters.
But do understand that it is HIS choice. He is an adult, and however stupid or misguided you may feel that choice is, he has every right to make it.
It seems to me that there are 2 parts to deal with separately here: One is your pain/sorrow for the end of a relationship that at one time held many hopes and dreams for you. That's legit, and you will need to feel the pain and sorrow and move thru them to heal. This reading (in 2 parts) might be helpful to you with this portion of the problem:
https://www.cottonwooddetucson.com/p...ner-112011.pdf https://www.cottonwooddetucson.com/p...ner-112011.pdf
The other part of the problem is that you're hurt by the choice another adult made. It took me a long time to even begin to accept the idea that my A's choices were really none of my business. All I could attend to were my
own choices. If I found that his choices were not congruent w/the life I wanted to live and w/the way I wanted to be treated, well, I could make a stink about how bad his choices were (which never changed a single thing) or I could start making choices
for myself about my own life.
I hope you'll do as much reading as you can here, GG, and keep on coming back. It takes time to begin to see your way clear, and there are a ton of resources here to help you get on that path. Wishing you strength and clarity.