Is it normal that cheating wives turn me on?

For some reason, even the plainest wife can suddenly become slightly more attractive to me if I've heard that she's had an affair at some point. Most of the women in my fantasies cheat and, though I find it repugnant and to some extant it churns my stomach, I can't help by find it attractive and I sometimes imagine what it's like to be a skinny, beta-typish husband hiding in the closet and watching his wife have sex with some meat-heat. Makes me sick but it gets me off.