About the books:
The Summer I Turned Pretty
Every since she was born, Belly and her mother and brother spend the summer months at their mother's best friend Susannah's beach house with her and her two sons, Jeremiah and Conrad. The time they spend there is idyllic and perfect, everything Belly could want for in a summer. The summer she turns sixteen though, everything is different. Her mother and Susannah are being secretive, Conrad is extremely moody, and the boys can't seem to understand that Belly isn't a little kid anymore. As everything around her changes and Belly falls in and out of love, she’s certain of one thing: this summer will be far different than all the ones before.
It's Not Summer Without You
We'll Always Have Summer by Jenny Han