The plot was of a teenage couple who fell in love but their story was complicated by the fact that the boy’s mother had killed the girl’s sister in an automobile accident. I don’t remember everything but I think the mother had maybe been driving after a work holiday party, and it was raining, and the girl was riding her bike and was hit by the car. The young teens who fall in love don’t know about this connection at first, then when they find out it pulls them apart.
That’s all I remember; I don’t remember how the story is resolved. From the early-mid 1980s Solved by the original requestor When We First Met by Norma Fox Mazer.
Lost Classics of Teen Lit: Name That Book! 