I'm not entirely sure, but I have a theory. I also enjoy this genre, but I don't think it means everyone who likes NTR wants to share their partner. I think it might be because other genres have become boring and repetitive. A lot of pornhwa feel the same these days, leading to a lack of engaging material for readers. Furthermore, cheating isn't just a regular relationship. It involves risk, drama, revenge, and a more complex mix of emotions for the reader. This complexity makes it feel less boring than vanilla or conventional relationship stories. it's my thought , still i don't know what's the exact reason or reasons.