Title: Second Best (Wildfire)
First published: 1979
Description: Shelly Barr thinks she's boring and plain, and always feels second best. But Ryan Gallagher thinks she's someone special and wants to go steady with her! She's excited and happy - until her sister fixes her up with Nick, a sophisticated college boy. Shelly tries to keep the date a secret, but Ryan finds out and angrily breaks up with her. And Shelly's not even sure she likes Nick. Their first date was a disaster!

Shelly's so worried. All she wants is Ryan - but can a second best girl wind up in first place?  [text from book jacket]
Subjects: sisters, older sisters, jealousy, insecurity, inferiority complex, perfection, high school, cheating in school