Lily Haize is finally 21, and she's ready to celebrate in style, on a dreamy beach vacation with her parents. There's just one problem: her parents' best friends have decided to tag along... and they're bringing him. Harry Styles Smug, infuriating, cocky Harry, with his stupid perfect jawline and his annoying smirk that has definitely gotten worse over the years. Worse? He's turning 21 on the exact same day as her. Cue the birthday competition, petty dares, beachside bickering, and endless one-upping. But as the days heat up, so does the tension-of a very different kind. The hate is still there... it just comes with lingering stares, accidental touches, and moments that make her question everything she thought she knew about him. One villa. Two birthdays Too many secrets. And one unexpected twist neither of them saw coming. It was supposed to be a vacation. It might just be the start of something more. "You can keep pretending you hate me, Lil..." He smirked, fingers brushing the hem of my dress. "But your body's already told me the truth."