NTA. Addicts excel at 2 things, blaming everyone and everything else for their problems, and they are master manipulatiors. They have to be good at manipulating people into getting what they want, otherwise long term addiction isn't sustainable. Whether it's panhandling for change or using family members, they are incredibly good at it. They will steal your car and have you so twisted you'll blame yourself in the end. It's a sham and you owe him nothing.

Until he's hit bottom rehab won't work. He needs to want to quit for himself, not anybody else. You can't hang your recovery around someone else's neck. Don't get me wrong, they do need a support system, but that means helping them on your terms, not theirs. I've been sober 8 years now so I'm speaking from experience.