There is no rule that women have to follow that says all men must be treated equally. Women aren't forced to fuck guys they aren't attracted to.

Women are the gate keepers of sex and relationships and they decide if the man is casual sex material or relationship material, or if she's just completely disinterested.

Men are the persuers and persue women by applying to be a casual sex partner or serious dating partner. She chooses if she is interested in the man for either.

With casual sex there women tend not to orgasm, only 30% orgasm and majority have negative feelings and feelings of regret.

So it's normal for women to try it once or a few times, not enjoy it as the man cum too fast and likely didn't please them/make them orgasm. Then decide they won't do casual anymore.

It is not an insult if a woman wouldn't have casual sex with you but would date you seriously, she just doesn't want to have another disapointing hookup.

More attractive men can get casual sex, and less attractive men if they are willing to fuck less attractive women. The ability to get casual sex isn't necessarily a good thing and doesn't mean the guy is more attractive or better. It's just a higher risk of stds and means he's promiscuous which isn't good.

Low n men and women tend to attract eachother. High n men and women tend to attract eachother.