In Thrall by Jane DeLynn

So the sixteen-year-old Lynn writes her thirty-seven-year-old English teacher a letter, and they embark on one of the funniest-- and saddest-- love affairs you'll ever read about: one shrouded in secrecy and guilt. For this is the early sixties, years before Gay Liberation, when all Lynn knows about 'lezbos' is that they wear their hair in crew cuts, buy suits like her father's, and sprout mustaches over their upper lips. Lynn, in her desire to appear 'normal', continues to make homophobic jokes with her girlfriends, neck with her boyfriend, and play the innocent with her parents, even as she checks the mirror each night for the telltale signs of her 'perversion'. Here is a story about the kind of seduction that is every parent's nightmare. In this profound, witty, poignant, and highly charged novel, Jane DeLynn proves herself a writer of the first rank.