You set a boundary. Which your AH clearly understood
He broke that boundary of his own free will
Enforcing that boundary is the right thing to do. If you don’t your boundaries become meaningless. You will also loose more of yourself to his addiction
I was never able to set heathy boundaries. I was finally able to take back my power & stop the madness. Back in June 2017 by telling her I was done. It was as not easy to do. Even several months later it’s still hard.
I wish you all. the best