Treeners, you have been given a gift. You just can't see it right now. He broke up with you, so there is no need to tell him you need space. He gave you space. I would go No Contact. Block his texts, phone calls, FB. Like any addiction, and we do become addicted in our own way to the A, you need to completely step away and abstain if you're going to heal.
He is not in recovery, this scenario will never change. Aren't you tired of the drama? He will continue to get worse, and even if you're by his side 24/7 there is nothing you can do to change his path. You can only work on YOUR path.
It's a new day for you, and there is hope of a better life without the A chaos. Find an AlAnon group near you and start attending. It will truly help you past this. As you said, breaking up wit an addict is different. The folks in AlAnon "get it".