True story: at the time the song first appeared, the conventional wisdom was that the girl in question doesn't go for the singer because of her, er, sexual orientation, if I may use that phrase.
I, on the other hand, was convinced that it wasn't anything so specific, and that the salient line in the lyric is actually...
"I don't have my finger on the pulse of my generation/ I just got my hand on my heart, I know no better location."
...rather than the more frequently cited...
"But the one girl that I want/ she wants that one bit of geography I lack."
That said, I hadn't heard the song in ages, and when I chanced upon that video the other day, all I could do is smack my forehead and scream "What was I thinking?"
I mean, OF COURSE, it's about her sexuality.
In any case, what a great freaking song and performance.