Just Out of Curiosity ...

... what, exactly, is this one-way friendship idea?
It seems to cast women in a problematic light.
A Question for Heterosexual Men (rhetorical)
↳When you masturbate, do you think of someone you know?
Now, for some the answer is pretty straightforward:
Yeah, my (wife/girlfriend).
And, you know, if you're in a sexual relationship with someone, you're in a sexual relationship with someone.
What about that other woman you know over there?
I ask the question because it is a quick illustration of the problem with this one-way friendship idea.
Can you be "friends"―here defined as platonic, nonsexual, trusting relationship―with a woman you have sexual fantasies about?
A Question for Women
↳Does it affect how you perceive a male friend if you know or have reason to believe he has specific sexual interest in you?
The thing is that we would be errant to restrict specific sexual interest strictly to masturbatory fantasies.
Furthermore, women, generally speaking, live in environments where conventional societal wisdom prescribes it a woman's duty to prevent men from raping or trying to rape her.
The idea that women can be close friends with men but not vice-versa collides squarely with Infinite Prevention Advocacy.
Does a woman know he thinks about her that way? IPA says she should protect herself.
Does a woman merely think it's possible he might think about her that way? IPA says she should protect herself.
Does a woman believe that he is without specific sexual interest in her? Does the thought not occur to her? IPA says she is irresponsible.
Removing the platonic/sexual question alters the equation dramatically.
It seems to me that in order for a woman to be close, platonic friends with a male, she must let down her expected and prescribed perpetual guard.
Furthermore, it seems unwise to expect that, say, over the course of decades, a woman in a close, trusting, platonic friendship with a male, will
never experience a sexual impulse toward him. Thirty-some years ago, we had a musical controversy in American society about whether or not women were empowered to enjoy sexual contact; despite "Like a Virgin" epitomizing the long fantasy of the Guardians of Female Chastity, coming right out and saying it was unladylike.
In the twenty-first century, it's a little different:
My name is Panty the Crazy, sexy Panty, and I'm not done breaking the news, now, boys, us girls, we're full-time horny, too. Hey, check out that hot one, damn, he's got a big one―delicious! It's time to get dirty, now, so will you all excuse me? Beat the air, I'm busy.
(Her sister, by the way, spoofs an esteeming heiress, has a sweet-tooth, shows no mercy to cheeralism, and gets high being nasty.)
This one-way idea of friendship might have its aesthetic pull according to traditional sex and gender roles, but in any more realistic context only seems to highlight the problems about how society views women.