They'd look at each other and feel something different. They'd think of each other constantly. Though both were shy, he'd get the nerve to ask her out in a week or so. She'd nervously, but eagerly, say yes.
They'd become inseparable. Being misfits, they'd be teased but neither would care. All that would matter was each other.
Prom, their first time, marriage, two kids, and so on.
But, sadly, both had their heads down, eyes on the hallway floor. The moment was missed forever.