I didn't catch your name but to the lady who's husband is a cheater and didn't come to the show: 
You said you are worried that he won't get the help he needs if you leave him. I want to tell you what my psychoanalyst told me when I said similar things about people that were hurting me: 
He said it's much easier for you to focus on their problems and helping them rather than help yourself! After evaluation, I found this to be very true - it was my lack of self-worth (of which I was in denial about too) that made me unable to see that this was what I was doing. You need to put yourself first and only, until you are happy, and then you can occasionally help others with their baggage - but not until you do your work first. 
I hope this helps - Good luck to you!