I could write a post, but it wouldn't be in agreement with that one.

I had no interest in the opposite sex in High School. I was nerd hardcore. And was approached by multiple girls. (I noticed some even in my then-clueless state, and retrospection has made several more obvious to me; the girl who outright kissed me, for example, was hard to mistake for anything else.) I gave the "I just want to be friends" speech to a couple of them. I also, completely unintentionally, embarrassed the hell out of one girl, whose friend asked me to join her for lunch because she had a crush on me. She hid her face for sixty seconds after I came over, so I eventually patted her on the head, entirely unsure what else to do, and went back to my table.

...yeah, actually, I doubt any of the girls who pursued me in High School ever tried to take the initiative again.