(First) and other (attempts)

It is not the question of being easy why a woman should not sleep with a guy on a first date. It has nothing to do with that.
It is a question of idiocy.
The truth is as follows: a man will say anything, absolutely anything, to get into a woman's panties. For example: you are even more beautiful than your profile picture; you are so beautiful, but I like your brain more. And a little more direct: I took a shower before coming to meet you, just to be cleaner, just so you know. Or: They say that eating and having sex are correlated, I do eat very quickly, but I don't act in bed the same way, you will see.
Etc.
Now, the other side of the truth is that a man will say absolutely anything to a woman after he has been inside her. Why is that? I am still unsure. It might be because they are being grateful for the pleasure received, or perhaps they are setting the turf for next time around. It might be that they really do mean it at that precise moment. Only they know, or probably they don't really don't.
The danger? Women before sex know that everything is BS but decide to believe it for the sake of their bodily pleasures. So that's fine.
The real danger? post-orgasmic women will believe absolutely everything they hear. So if the guy in question starts talking about future meetings, future activities that involve the both of them... she will believe him. It has to do with dopamine and other such evil chemicals but it is true. Women will believe anything after sex. It is a fact.
So there it is. If a woman has sex on a first date or too early to establish the amount of bullshitting there exists in the other, she won't be able to have real perspective anymore, hence the whole relationship could be based on nothing but post orgasmic chemicals and half truths.
Should women stop having sex on first dates? Absolutely not. Women should have sex whenever they feel like it. But they should just know that the aura of loveliness that surrounds the other after pleasure has been given, well, it is not real.
Nothing after an orgasm is real.
Except for the body.
The body you can trust.

(A piece of advice: never believe what a man tells you in bed... unless he says it three times on three different occasions... you know, just to give them the benefit of the doubt.)