My Brother's Best Friend Explores the Tangled Web of Secrets, High School Romance, and the Delicate Dance Between Passion and Secrecy. In "My Brother's Best Friend" by Karla De La Rosa, Carter and Harry navigate the complexities of a secret relationship with an added layer of challenge - her brother, Dylan. Set against the backdrop of high school, Carter grapples with her resurfacing feelings for Harry, her brother's best friend...