The Rewind (2022) by Allison Winn ScotchSynopsis (from the back of the book): Two exes wake up together with wedding bands on their fingers--and no idea how they got there. They have just one New Year's Eve at the end of 1999 to figure it out in this big-hearted and nostalgic rom-com from New York Times bestselling author Allison Winn Scotch.
