"Rich Kids" (1979)
Ultra-precocious Upper West Side 12-year-olds Franny and Jamie are best friends. Jamie, the new boy in town, has experienced his parents' divorce and guides his friend, Franny, in the art of surviving her own folks' imminent split. Franny senses the divorce because she has been secretly watching her father arrive home at 5 a.m. each day and trying to hide the fact that he has been away all night. She is down in the dumps and finds a kindred spirit in her buddy Jamie, whose mother and father split up long ago. He points out the advantages of being a "child of divorce" and is so persuasive that he almost convinces himself as well as Franny. When she convinces her parents to let her go to a sleep-over with Jamie, they explore their budding curiosity for the opposite sex.