How do men really perceive women’s behavior around other men?

Men always tell their girl to not wear makeup, revealing clothes, to not talk to men, laugh with them and have guy best friends...
When we see these things in a Platonic way, we talk and laugh with them platonically, a friend of mine told me it's because only men know how other men think, now I'm asking you guys, what goes on inside your heads?

How do men really perceive women’s behavior around other men?
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