I think stopping drinking is a good idea; I should probably take a lesson from you and quit as well. I too drunk text, like mad. People have definitely stopped talking to me over it, because I'll either text completely incomprehensible things, or make suicidal threats. It sounds like your hook-up buddy is not a very supportive guy, and I'm sorry that he said those things. You shouldn't be ashamed of your actions, you're trying to make a change and live your life better.