Hello Harperlee,
It seems to me that while in active addiction, a person does not really have relationships so much as use people as props in the scenarios in their minds--the scenario in which everything is OK and there is nothing wrong with the drinking.
As long as the people who love an alcoholic don't hassle him/her about it, then the alcoholic can say "see, I'm good!"
As soon the people who love an alcoholic begin to question their drinking or ask them to stop, then that is a threat to this perfect drinking world they have in their minds.
The response seems to be either one of two things: belittle and gaslight the person into submission; or end the relationship and tell everyone the person is crazy.
This can continue unless and until the alcoholic decides to finally change their own life. That can only come from within.
Take good care of yourself! You are worthy of a peaceful and joy-filled life!