I used to live with a bi-sexual blonde chick back in the early 90s. She was also a drinker, and i tried to get her to slow down. She developed a strategy of having one of her girlfriends come entertain me for the evening so i would let her go out to drink. Then she'd come home at the end of the night 3 sheets to the wind and join in.
What a crazy, crazy relationship that was.