Check out some Nar-Anon or Al-Anon meetings.
They provide support for family members and friends of addicts and alcoholics.

Dear Meme,

My experience is based soley on being fresh out of a long relapse. If you feel you are in some way helping him maintain his addiction, he is endangering you, you have to save yourself. I don't know what the cards have in store for him, I don't even know what the cards have in store for me. I can only say that I used/hurt so many ppl. I wouldn't have done it, were I not addicted. But, I WAS addicted. I'd relingquished my choice not to hurt/ use others. Does the fact that I was addicted make it ok? HELL NO! And it prolonged my inevitable bottom/latch door to lower bottoms, and so on. I'm not sure if you even love this man anymore. But, as a human being, the very kindest thing you can do 4 him, is to bail! Then, run like hell! Don't look back!
I have often thought I wished my husband would just throw me out. I don't know what the heck I'd do. The only thing I can say, is I had my own money. He knew I was using and kept badgering the heck out of me. Until finally, he sat on me, took my phone and keys. And here I sit... After the initial withdrawal, he gave those things back. But, I ended up giving my keys back to him. To try and buy myself some time, sober. I totally GET, that he's the guy. You, trying to enforce sobriety, could be very dangerous. So, I really don't see what other choice you safely have, but to leave.
I wish you safety.