Walking away from any relationship your invested in is hard. Even though you have to see him, I think it will get easier in time. A;though you know he has good qualities, you also know that he is not right for you, I would focus on that part even though I know it hurts to think he has this alcohol problem and is clearly in denial.
Never had to deal with bed wetting and my husband. But that just goes to show you how much the brain lies to them, because most guys would begin to suspect it might be a problem especially with your GF sleeping over.
You did the right thing, but Im sorry its so painful. Its really hard to say what, if anything, will prompt him to admit a problem and seek out some help. But it sounded like you were pretty miserable for the most part and you cant build any sort of relationship from that, even if you wanted to. At least not a healthy one. So kudos to you for looking beyond to the future you want. Knowing what we want, and knowing that we deserve to have it -help us confirm our decisions regarding those hard choices in life.