I guess I should clarify: if it were Hotaru/Chibiusa as a "schoolhouse crush" like you said, that wouldn't be so bad. ^^
And I always thought it was a little creepy that Mamoru was so much older than Usagi. I think the reason it works in this case is because the genre is obviously geared to adolescent girls, who fantasize and have crushes on older men. (Johnny Depp, anyone?) In most cases, those girls will never get attention from those older men, but some will. And that's where we get statutory rape. eek
And I always thought it was a little creepy that Mamoru was so much older than Usagi. I think the reason it works in this case is because the genre is obviously geared to adolescent girls, who fantasize and have crushes on older men. (Johnny Depp, anyone?) In most cases, those girls will never get attention from those older men, but some will. And that's where we get statutory rape. eek