From "Metronome"

One time that summer, Jin had grown hard while he’d been sitting on the bench next to Jake. Jake had come back from soccer practice and hadn’t had a chance to shower- and Jin had dismissed his wish to do so because he was already fifteen minutes late. They were working on scales from “The Leschetizky Method,” and Jake was anxious beneath the irritating layer of dried dirt and old sweat, too preoccupied with the urgent treasures of high school to be tied to a piano.
“I can’t wait ‘till I’m at college so I can just get up and get a beer, you know?” He turned to look at Jin when he said this. Tiny spores of dirt flecked across his forehead.
Whether it was the urgency of his odor, the idea of sharing a cold beer, or the fact that this impossible boy was good at everything he tried and gifted enough not to care, Jin felt himself growing beneath his slacks and had to excuse himself to use the first-floor bathroom. After that lesson, Jin started to see two, three men an evening in his rented rooms in the city. One time in August, right before school started, he took three strangers back to back, all of them difficult and violent and hard and so filled with rage, the last man made him bleed. Nevertheless, when he crawled into bed afterwards, Jin was consumed with regret that he hadn’t gone further.