i don't think sarah's crush on me ever receded, but rather went through a number of weird phases, all of which were no doubt outside of any reasonable approximation of reality, but purely in the realm of her own fantasy.
so, there was a period in the eighth grade where she'd take her shirt off and sit beside me on the school bus, or even sit in the seat in front of me and hover her bra an inch from my nose. i was the only 'boy' left on the bus for the rest of the ride; through whatever mix of coercion and thrill, she had a couple of her friends mimic her, as well. the game was that i had to keep ignoring her - but she was also no doubt demonstrating that she'd grown a pair, since she was little. i was always well trained, and fully capable of continuing to ignore her...but this went on for months....
it wasn't until the twelfth grade that she finally snapped. i had moved across town, so we weren't on the same bus, any more. we hadn't been in any of the same classes in years, either. but, i happened to get on a (city) bus she was also on; we made eye contact, and so i instantly stopped and sat a distance away from her, as i always did. she leaped up and came storming across the bus, screaming at me, startling confused passengers...
you're a fucking idiot. you know that? you think you're so damned smart, but you're just stupid. you're so stupid. so, so, so stupid.
my best guess is that she finally realized at that point that i was never going to stop ignoring her - and i never was.
i don't think i've seen her since.