Al-Anon also exists for adult children of addicts (and alcoholics). For ex-spouses of addicts. For siblings, and parents, and bosses of addicts. For friends, and ex-friends.
Because the thing that ended you up so enmeshed with YOUR alcoholic? That was about you. And you can leave the man…but no matter how far you go, there you are again.
Honestly I hated Alanon. I’m a recovering addict, raised by a practicing addict, so I did both. I highly prefer AA.
But I do recommend a little light reading. Try something by Melanie Beatty.
Usually codependent personalities dont have just the one skewed relationship. It’s the sort of thing that shows up in every aspect of ones life.
Good luck. And for the record, I think you did a difficult and courageous thing, leaving your alcoholic.
But if you had wanted to stay, those ladies could have shown you how to keep from letting his disease kill you. Their choice is courageous, too.