In Last Year's Mistake by Gina Ciocca, a misunderstanding that happens the summer before Kelsey's freshman year of high school turns her into a school joke and ruins her relationship with Dave, her longtime best friend. When Kelsey's parents decide to move away, she leaves the past behind and begins a perfect new life for herself — that is, until David's family also moves to her new town, bringing back old feelings that threaten to destroy Kelsey's fresh start.