The fantasies, I knew, were getting a bit out of hand. They couldn't be unethical, I told myself, if nobody got hurt by them. Taylor Stern was objectively attractive, and I was attracted to her. There, I'd acknowledged it, and the world didn't end. It wasn't even real attraction. I'd been attracted to Candace Salata when she'd started last year. We'd had the same prep period, and our run-ins waiting in line for the photocopier had gone well. Good sense of humor, pretty, shared professional interests. That was attraction. (Then I learned she wasn't into men, which put my feeble flirtations to rest tout de suite. Lucky Louisa.)

No, with...