So called high function alcoholics deteriorate over time. They like to point out their functional level to downplay or dismiss alcoholism. They even deceive themselves.
Just when I thought I had heard every rationalization in the book, someone on this forum shares a new one LOL.
I know living with/loving an alcoholic is a nightmare, I don't mean to laugh or trivialize it, just to say WE, US, our lives, our happiness, and OUR SANITY are important. Don't sacrifice yourself for a person that is not in control. No matter how good the person may be, might have been, with alcohol at the steering wheel, you are not really with that person, but with a demon.