Blendover
When a heterosexual secretly lives behind closed doors, often indulging in apps or profiles geared towards extreme sexual behaviors and fetishes while returning home to their sweet wife and kittens. Specifically, they prefer from the behind and have incestuous wet dreams. The lines are "blended" of acceptable and unacceptable norms of desires. Suppression often leads to double lives and divorce.
I found my husband's gayfisting reddit thread, and the dots finally connected that he loved to blendover, and often spends hours in the shower pleasing himself analy with our soap bottles and razor sticks.