Adult male bed wetting

[incubied]

My boyfriend is almost 30 and still wets the bed. He only does it after he's been drinking large amounts (i.e. a 30 pack of beer to himself) but he drinks like that regularly. When he does it, it wakes me up because you can clearly tell he's having a dream where he's wide awake. He'll yawn and smack his mouth (you know, that morning dry mouth thing) and he tries to walk while he's laying down before he "gets to the bathroom". I try to wake him up, but he seems to be in such a deep sleep that he can't hear me or feel me shaking him. He doesn't wake up until after the fact. I've never asked him about it. Honestly, I know how embarrassed he must feel, so I'll just move over to the dry spot and pretend to be asleep. He'll pick me up and move me to the sofa, put the sheets in the washer and put me back in bed. I don't know if I should say anything to him at all. He's a very proud man, but I do want to help him.
If any men have a similar problem, I'd like your input on if I should talk to him about it or how to go about doing it and if anyone has any advice on dealing with it or treating it, I would really appreciate it.