Why are women insecure about confessing their feelings/love to a man and always wait for men to confess first?

I see some women do, but most wait for the man to take the first step. I think there must be many reasons to this as this has been followed for ages
Why are women insecure about confessing their feelings/love to a man and always wait for men to confess first?
Why are women insecure about confessing their feelings/love to a man and always wait for men to confess first?
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