I’ve been with my partner for 18 months. Since he moved in with me I’ve discovered that he is a functioning alcoholic. He has also been diagnosed with diabetes, so now can’t get an erection. When he’s not at work he drinks all the time. He stays up until the early hours drinking and watching tv. There is no intimacy between us. He is extremely untidy, won’t put his clothes away, so bedroom looks like a tip. Today he stayed in bed until 6pm when I insisted he got up. Everything is about him. He says I’m the love of his life, and promises to change but never does. He won’t change his diet or go and see his GP. I’ve tried to support and help him, and we’ve had so many conversations about this, but nothing ever changes. I feel like I’m living with a teenager, who is just a house mate. Is this relationship doomed?