4 books in series

Ruby Oliver

Ruby Oliver is a 4-book series with 4 primary works first released in 2008 with contributions by E. Lockhart.

The Boyfriend List
The Boy Book: A Study of Habits and Behaviors, Plus Techniques for Taming Them
The Treasure Map of Boys
Real Live Boyfriends: Yes. Boyfriends, Plural. If My Life Weren't Complicated, I Wouldn't Be Ruby Oliver