Three Sisters — Norma Fox Mazer

How's a girl supposed to know when she's in love -- and more importantly, how does she get out of it?

One remarkable older sister would be bad enough, but Karen Freed has two: Liz, a beautiful poet, and Tobi, compellingly intense and argumentative. Karen knows she couldn't possibly compete, but it would be nice to be known for something of her own. The three have been inseparable all through Karen's childhood, but now her sisters have moved into a world that Karen can't yet share, and their blossoming romances make her feel left out.
 
Karen wishes some of their romance would rub off on her. She has Davey, but he's more best friend than love interest, and despite his many advances, Karen knows it wasn't meant to be. Is something wrong with her? Will she even know when love comes her way? Then she falls head over heels for someone she definitely can't have: Scott, Liz's boyfriend.
 
Her feelings cause a rift between her and Liz, one that Karen might not be able to fix. But if anything has ever brought these three sisters together, it's coming to one another's rescue.