my boyfriend only comes around when he's drinking

I started dating my boyfriend when we were just 13, broke up when we were 16.. It was an off & on relationship until 2 years ago. We officially got back together Oct 2014, he purposed to me Jan 2016.. Ever since we got engaged the only time we ever hang out now is when we're drinking, the longest we haven't talked was 3 weeks and we haven't had an argument or anything. It's starting all over again, I recently broke my foot and now I haven't seen or heard from him in a week.. I love him but honestly I don't know how much more I cando. I try get him to come hang out with me but he always has excuses & I'm getting tired of it, my friends tell me to just leave him alone.