So what did happen to you, BARF? You found some cuckold porn online, and your dick said: "DUDE. THIS IS IT. THIS IS WHAT WE'VE BEEN LOOKING FOR. RUN WITH THIS." Your particular kink was already in there somewhere, already rattling around in your erotic subconscious, but you couldn't articulate it—it didn't take shape—until you finally "stumbled over" the images and narratives you were looking for all along. And your kink, like the kinks of so many other people (see SEAN's fiancee, above), seems to be grounded in insecurity and fear—you're the jealous type, you fear being cheated on, and your erotic imagination/reptile brain took your fears and spun them into a kink. Congrats.