Another of Klein's sermons about the power of love and dishy sex to melt the ice traps of teenagerdom. Maggie and Caroline are Manhattan schoolmates who land some distance from initial aspirations. Maggie would like to be a career scientist with freeform attachments; Caroline, the artist, is attuned to a pastel domesticity. Both are one-parent children. Maggie lives with her widower father, a good-natured Freudian psychiatrist, in a comradely partnership; Caroline's pleasant, somewhat more conservative mother is divorced. The two 18-year-olds are almost simultaneously catapulted into their first sexual experiences. Virgin Maggie pairs off with virgin Todd in her apartment (""So he'll be here in the morning?"" benignly inquires Father). But Caroline's lover is 28-year-old Justin, her science teacher, married, and a father! Their rousing affair--fought off at first by Justin--has Justin's wife running off to commit suicide. Caroline's mother takes the relationship in stride--she has her own plans: ""Malcolm and I have been talking. . . about the idea of--well living together basically."" Well, basically, Caroline and Justin do marry, while liberated Maggie, softened by the near-saintly Todd, reconsiders domesticity. With lots of Me!-generation talk and nubile sex, this should appeal mainly to the savvy young--particularly those who fantasize about getting Teacher into the sack.