The funny thing about NTR stories is that they always make it seem like nice women become bitches because they have a lot of cheating sex. What is more likely is that girls that you think are nice are actually bitches and therefore they cheat.
A lot of NTR stories make me think of the incel community I know how they hate hot women for not having sex with them. I once knew a young man who was completely obsessed with this girl, who he claimed to be his friend. The girl was a Gym rat and spend a lot of time worrying about her appearance. I felt like it was obvious that the girl had self-esteem issues. The young man who claimed to be her friend certainly didn't help that since he was constantly praising her beauty but putting her down for being such a slut. Apparently she was dating every guy but him and he was friendzoned. Eventually the girl's father had to confront the young man and tell him to stay the hell away from his daughter.