I played this game with an alcoholic partner for 13 years, nothing actually changed until I kicked him out and even after our break up, he's been in and out of AA. The more we focus on them: snoop and count drinks, etc., we are not living our own life. I agree with the person who suggested outings, friendship and time away... it will get you used to loving yourself again and let him have his path, which you can't change by observing and confronting or being silently upset about.
I am telling you all of this so I will remember it for myself and keep applying it to my own relationship with my son who struggles with addiction.