Some women treat men in AF/BB terms, but sexually successful men provide different treatment to women as well. Men feeling butthurt about this behavior should learn to apply it themselves.

If a man is interested in just having sex, he doesn't have to worry about long term consequences.

He can take her to the fanciest restaurant, gifting her a mixtape, lovebombing her like a complete simp. He can totally spoil her, and it doesn't matter because in a week, or a month he can just ghost her... no consequences. West Elm Caleb style.

Also a man can do that with a woman below his league, because it's not like he is going to marry her.

When a relationship is on the table, the rules are different.

We only consider women which are in our league (or higher) as potential partners. Can't spoil them because not the smartest thing to do in the long term. Also we have to make sure she is the right one, so shit tests have to be made. We can't go all emotional because women's desire for us to open up is what keeps her interested.

In essence we see higher value women as relationship material, and we treat them worse then lower value women which were just for sex.

On top of that, if we just want sex then we can lie about everything. The more we lie, the less time we have before those lies are revealed. We can even lie about wanting a relationship, or our incomes, our rental BMW not being rental... pick your poison.

In the end finding a relationship is harder then finding just sex. Because both genders tend to treat relationship material worse then sex material. And women get spoiled by men which only want sex.