I think I felt guilty at first, but that was because my AH was being a martyr/the victim and he was guilting me verbally. Once I called a program friend and thought about my boundaries, I realized that I did what was right for me and I stopped defending myself to my AH. For example: I just said, "I'm sorry you feel that way, but driving while intoxicated can kill someone including yourself. I will call the police in the future." He knows I mean it too, so he doesn't drink at home anymore when we're here. He knows he'll go out to get more because he never buys enough, lol.
I remember when I told him no when he asked me to find him a lawyer for his DUI case. He was in shock. I had never told him no before. He tried to persuade me and tell me how wonderful I was at research and how he trusts my choices, blah blah blah.....Still I said no. Then he stomped off in a huff and had to do it himself. He survived.