You know, I'll admit that I embarrassed myself (and probably creeped someone out) by expressing my feelings about them in high school.
BUT- that expression was affectionate/romantic, not explicitly sexual. And I backed off in horrified embarrassment the moment I recognized the sentiment wasn't returned. In a very weird way, it's sort of reassuring to know that there are guys out there who are far creepier than I was at my worst.
And, good grief... I stopped doing that in high school!
I don't know, but the number of stories I hear like this, I sometimes wonder if we need a basic human relationships course at least as much as we need sex ed in school.