Sexy — Joyce Carol Oates

It was in November, a Thursday after swim practice. The thing with Mr. Tracy, Darren's English teacher.
The thing was how Darren would think of it, afterward.
The thing that was vague and not-named.
The thing that hadn't happened, anyway.
Darren Flynn has the perfect life -- until that day in November.
After that day, after what happened (did it happen?), life is different. Darren is different. Nothing is as it was -- -- before. His friends, his family, even the people who are supposed to be in charge are no longer who Darren thought they were. Who can he trust, now?