Inseparable - Paul Lahote

Sophia Swan, the younger sister of Bella, has spent every summer in Forks with their dad, Charlie, since their parents' divorce. While Bella hates the town, Sophia has grown close to Jacob Black and his friends, especially Paul Lahote, whom she's secretly been dating for over a year. Now, at fifteen, Sophia is torn between keeping her relationship with Paul hidden from Bella and navigating the challenges of her sister's relationship with the brooding Cullen.
But what happens when Bella leaves her and her dad, the ultimately goes into depression, followed by which Paul starts avoiding Sophia, and breaks things off with her?