a perceptive partner

I took a social dance class.  The first day of class, as I moved from partner to partner, I made an effort to learn all their names.  One partner was a bit more ambitious.
"Hello," He greeted me.
"Hello."
He looked me up and down.
"Let me guess, you're kind of an artsy type, you like odd music, and you watch films, not movies."

He was exactly right.