I made a choice

I don’t know if it was the right choice or not but I decided to leave my fiancé of three years. In the last year he has cheated twice, he went to work for someone and got back into drugs and any time I tried to talk about how I felt I was essentially told to push it off forget it happened. I realized I had to much anger and hurt inside. For the last year I have begged him to go see a counselor with me. It wasn’t until this point of me being done that he wanted to try and work on things, mentally I know I can’t do this. I feel like shit because I know he has no where to go I know he isn’t close with his family and that makes it worse. Did I make the wrong choice in this because right now I don’t know.