Sexual imagery versus sexual behavior: What are some interesting anomalies you've observed?

I know people so abhorred by images of nudity or sexual behavior in film or print that they turn their face away rather than view the images.

Yet, some of these same people cheat on their spouses/SO’s and/or engage in all kinds of sexual activity that most of us would characterize them as loose.

While I don’t run across persons like this frequently, it happens often enough. And their distaste for sexual imagery versus their sexual practices is so out of alignment imho that i find it difficult to reconcile the two in the same person. Have any of you observed this phenomenon and wondered about it? Can anyone offer a clinical perspective about this?