HAHAHA, we don't?
I swear, if I knew the answer to that, I wouldn't be here.
But ye, most of the time, if she wants you to kiss her, she'll get real close to you (physically), stop talking, and look deeply into your eyes and/or lips. If that happens, then I'm 99.9% certain she wants you to kiss her. Go for it tiger! :cheer:
But anyways, we shouldn't be worrying about whether SHE wants US to kiss her. We should be thinking "Do I want to kiss her now?" Worrying about what a girl thinks is the path to damnation (AFC). Do whatever you want my friend- your "The Man" after all