I know we're not supposed to give advice, but no, IMO I feel this is NOT a good strategy. For many reasons:
1) Why involve him in your life anymore? he is clearly a train wreck heading off a cliff.
2) Sitting down and telling someone they need help does little if any good. An alcoholic may get help when he/she hits bottom and in their own good time. Nothing anyone says or does makes a whit of difference.
3) Maybe THIS will be his bottom. The more you all let him fail, the more he has to experience the consequences of his actions, and many alcoholics say, experiencing bad situations like people leaving them, being put in jail, being homeless...were the only things that forced them ot get help.
Please take this time to focus on you. You've been thru a lot. I was only with my exabf 3.5 yrs and I have some PTSD, I'm sure of it. I no longer can afford to spend energy on him; I will end up in the nutty ward if I don't work on myself-which is the only person I can CHANGE.
Oh, and btw, BEEN THERE DONE THAT on talking to my ex's parent. Worthless. Useless. They were in denial. All it did was give my ex fuel to make me look like the one with a problem.
Originally Posted by
Mimic 
I was having a hard time with it because it seems like I don't even know him anymore. I couldn't wrap my head around it, that alcohol has consumed the love of my life, right long with my mother, my father, and some of my friends.
Right after I posted his message, his friend called me to inform me that he flipped out on the people he had given a room to until they could move back home to Seattle. It was the male half of the couple's sister who had thrown my XAB out last night when he became too drunk and belligerent. He started freaking out, even throwing things (I'm not sure of any damage) which suitably scared them enough to pack up their things and leave, even though they were slated to stay another week before they moved. To me, this is the final straw, and I simply cannot take it.
My mother (a recovering alcoholic and the current spouse of a severe alcohol dependent individual) told me I need to sit him down, tell him I feel he needs help, offer to help him get help, and let it go. If he wants to genuinely get help, then help him but do not date him. If he does not get help, I've done all I can, and I should back away. His mother should be alerted to his behavior, then I should walk away for a while. Is this a good strategy?