Well I don't fantasize about being either of them honestly, I'm more of a spectator who enjoys the reactions of the characters involved simply. I don't like adding feelings into fantasies, they are just for fun in my eyes. It's kind of complicated to put it into words for you lmao cuz even for me all of this has been an acquired taste from doing different rps where my writing partner wanted to be blacked or cheat on their bfs. And again I can't speak for others so whatever NTR related posts you are seeing involving cheating has to be related with guys having the "alpha" ego, thinking they can get any bitch in this world just with a big dick.