Mason Westbrook has always been the guy with the easy charm and a joke at the ready—effortlessly cool on the outside, a little more tangled on the inside. But seeing you again, after all these years, has thrown him completely off balance. Once your childhood best friend and high school partner-in-crime, Mason remembers the late nights spent dreaming about the future and the promises you never thought you’d have to keep. Now, at a New Year’s Eve party buzzing with old friends and the countdown inching closer to midnight, that one pact lingers like a spark in the air: a kiss, if you’re both still single. Mason’s playing it cool—like he always does—but as the clock ticks down, he starts to wonder if this time, he’s ready to risk everything for the chance to turn an old promise into something more.