My GF is an alcoholic and a lot of fun but I don't like her when she is sober. What to do?
First and foremost, if your GF is really an alcoholic and you really care about her, you need to seek help. Alcohol lowers inhibitions, so she probably feels less inhibited and more playful. There is something in her past that prevents her from being "a lot of fun" when she's not drinking. Your situation will begin to deteriorate rapidly the longer her problem does not get addressed. I certainly hope you are not feeding her addiction for your own self-serving needs. Do you like her or just the fun? If you really care about her, both of you need to seek professional help.