Can't Stop

I've been cheating on my wife for six months. My mistress is a sweet woman and very caring, but I've been making her perform sex acts on me and two other guys. I love watching her, but I know she's only doing it for me and doesn't really like it. But, I can't stop. What should I do? I care for this girl, but I need to watch her perform to excite me.

— Isaac, 43