hi nanadeau. Well, first things first - you didn't Cause it, can't Control it and can't Cure it (the 3 c's).
Why would you think you are being unsupportive? Your Husband is cheating on you with escorts and using drugs. What is there to support there?
It's one thing to be supportive if a drug addict has chosen recovery and you are driving him to meetings every night and say, cooking dinner while he's at said meeting.
It's a totally different issue to just enable him to carry on. Enabling is the key word there. Please don't feel guilty about this but what you are actually doing is "supporting" his drug use and other activities.
He's only seeing escorts to score drugs? Really think about that. In your wildest dreams did you ever think that a husband of yours would say that?
My suggestion? You need time and space away from him to really get clarity here. It's very hard to see exactly what is going on when you are right there in the tornado. Is it possible you could ask him to leave for several weeks while you get your mind clear?
Also there is Al-Anon, Nar-Anon and therapy, all of which will also help you to clarify your feelings.
You deserve better than this, don't you think?