What helps me forget about him is when I am "feeling" lonely and miss him I stop and think about all the rotten stuff he has done to me in the past. Then boy does my feelings change fast. I ask myself "what makes sense for me"? Living with him and his drinking and those effects or being by myself having peace of mind and not worry about what he is doing. Because guaranteed he's still the same jerk I was with for so long. When you feel lonely it's just your feelings and you have the control to change that feeling. So try hard and think of something else.