If you're codependent you may want to ask the same questions of yourself. Both are addictions (one to a person, the other to a bottle). Both are hugely affected by denial and rationalization, both are mental illnesses. There's nothing a codependent could say or do that got me to put down alcohol. And there's nothing anyone can say or do that will stop a codependent from obsessing about an alcoholic no matter how bad he/she treats him her.