Hi Pigtails,
I know you are struggling with not drinking and it's too bad that your boyfriend's behavior is so worrisome. Unfortunately none of us can tell you what he might do in the future. I think you have to ask yourself if you can deal with this behavior if it keeps occurring for the rest of your life.
My relationship with my axbf hit the skids when he lost his job and began drinking more heavily and smoking. I feel very sorry for him but the behavior was in complete violation of previous agreements we had made towards each other in the relationship. I am still hurting over it two months later but I couldn't handle him anymore. I know in my heart that I don't want to be attached to someone who is an alcoholic. His drinking was worse than I imagined because I found hidden bottles, he was drinking at home alone and going out to bars all day in complete violation of my feelings.
I hope the two of you can work things out but you need to be true to yourself as well.