From my own experience, I've found myself to be less INNATELY CURIOUS than many of my male counterparts.

I distinctly remember my first meeting with one of my female friends, she was staring at a poster on the wall which explained why e^(i pi)=-1, copying down each step, and clearly trying to understand it. This was not in connection to any class, she was just interested. And I remember being immediately, strongly attracted to her simply for that reason, because of that demonstrated, genuine curiosity. Which indicates that on some level, I perceived that trait as being remarkable, though I'm not sure that that's specifically because she was a girl.

(For those looking for the end of the story, my best friend was already actively pursuing her (which is why we were being introduced), and I chose to respect the friendship.)