It's ok, you can relax. You don't need to think that you need to make some kind of life changing decision right now.
This is why:
He can finish moving out for now. Will that destroy your relationship for later?
No.
If the two of you have something solid, it can be rekindled later. This one decision--about him finishing moving out or not--is not going to make, or break, the relationship.
The other stuff--the BIG stuff that is within the two of you will decide. Not this.
So relax.
There is only a few emergencies in life--stopping children from running out into traffic and the like---the rest of it, nope, not an emergency...and time will tell.
If he gets help, if he actually changes--which only the test of time will reveal--then you can choose, or not, to consider a relationship with him.
Right now he needs to pass the test of time.
So baby, sweetheart, and the rest, I would tell him save that for later. He might not like that! Or, don't tell him to save it if you don't want the backlash, but don't let it be a decision maker for YOU.
But your job is to protect YOU, and letting that kind of stuff get to your softer side isn't how you protect yourself and gain stability and sanity.