If it’s ok for a woman to feel weak in the knees about something a man does, is the opposite also true?

A man's got to be very careful what he feels.  Women might get away with feeling anything, but judges will throw the book at a man.  (best just to keep your hands to yourself)

Yes, it is OK for a woman to feel weak in her knees when another woman does something.

Sure.  This reminds me of a movie in which Gene Wilder would almost faint at the sight of a certain woman.  I can't remember the name of it but it was many years ago.  Wilder was one of the really funny guys.................and along with Richard Pryor was as good as it gets comedy-wise.