Jake and Lily is a well-written book by the award-winning author Jerry Spinelli, who writes about adolescence so well. Although told in alternating chapters, this book is really about Lily's struggle to reconcile the inevitable process of growing up, and sometimes that means growing apart from the ones we love. Jake, on the other hand, has found a group of not so nice boys to run around with, and succumbs to peer pressure and conformity. Lily is annoyed by Jake's new independence from her. She holds the feeling that so many tweens share, wondering "why can't we stay how we were?" With her wise and wonderful grandpa's help, she comes to terms with the fact that twins have a special and spiritual connection, but it is okay for them to grow and have their own individual identities, too.