Men and women can be friends, but men can't be women friends and women can't be men friends. Let us be clear on this.
I have had some interesting correspondence about the following situations:
1. The man has a crush on a girl. He tells another girl all about it. He gets over his crush on the first girl. He develops a crush on the second girl. The second girl doesn't take him at all seriously.
2. The girl has a crush on a man. She tells another man all about it. She gets over her crush on the first man. She develops a crush on the second man. The second man doesn't seem to be interested anymore.
We could chalk this up as a tragedy of bad timing, or we could posit that there is something unwise in telling members-of-the-opposite-sex friends about our crushes.
If there is one thing I have learned about men, it is that they are not girls. And if they are attracted to girls, they do not appreciate being treated as if they were girls. Sometimes they resist this quite vigorously. But sometimes they do not because, being attracted to girls, they will cut girls a lot of slack. But, in general, they don't like being made to feel like the palace eunuch. Their semi-conscious resentment could be expressed in the parlance of the neighbourhood of my youth as "What am I? Chopped liver?"
Male friends who identify as gay do not seem to mind as much, but even then you really must understand that they are not "just some of the girls" even if they say they are. They are men, with male sexuality, and whereas their advice might be have an internal logic as far as men who identify as gay are concerned, it might make absolutely no sense for women, particularly chaste ones. Whenever men who identify as gay give me or tell me about relationship advice they have given other women ("And I told her, Darrleeng, you should take a lover"), my hair stands on end.
I like my guy friends so much, I don't treat them as if they were girls who might enjoy talking about girl stuff, e.g. my feelings. Possibly I slip occasionally, and bore them senseless, for which I apologize.
There's a fine line between treating all nice young Single men as if they were just Husband Potentials/Impossibilities and treating them as if they were girls. I call it Friendship with Reserve. It's respectful, it's kind, and, if this applies to your state of life, it keeps the options open.