Thank you all so much for your posts. All of your replies have helped me so much. I have never talked to anyone about this problem, and this community has been incredibly helpful thus far; it's so nice to hear people who have had the same experience as me.
His actions certainly do not match up with his words. He tells me he loves me and wants to be with me forever and marry me someday, but doesn't do much to work towards that goal. Sometimes I feel like he takes me for granted, that he thinks I'll always be here for him, and so he doesn't really do much to change. I love him so much, but I don't want to deal with this forever. I guess I accept his unacceptable behavior because I want him to change, I know that he CAN change. He just doesn't put much effort into changing. We have talked about moving in together (I don't want to anytime soon), and he says that if we lived together, he would have no desire to drink (which I don't buy).