Boy, that is a really tough place to be in. I will give you my 2 cents for what it's worth but what matters most is what you think and want.

Similar to WildflowerChild, my first husband developed a drug problem after he was prescribed opiates. We had recently had a child together when he became injured and the pain and addiction soon took over his life. Not very long after, his addiction had taken over my life, my son's life and my parents life. We all loved him so much and it took me far too long to get away because of how much I loved him. If I didn't have a son who I needed to put first, I would likely have stayed in that relationship and died. I'm not being dramatic. My ex husband became violent and worse as his addiction progressed. I finally left and my ex spent the next 15 years in and out of jail and rehabs. I felt guilt in the first few years after leaving because I had made an oath "for better or for worse" but my son deserved more than my ex could offer and I know now I made the correct decision. My ex would have killed us all had we stayed.

With all that said, I don't believe my cautionary tale is what always happens. Some addicts do clean up Their acts and become very healthy in recovery. What does your heart tell you? If it says run, I think you should listen. If it says stay, get a therapist immediately and go to some codependency meetings for support. (((Hugs)))