Eight years ago, Ethan and Rebecca met, two troublemaking kids sharing secrets and first kisses in a tree house, until Ethan's mom returned to take him away. Each and every visit, his only goodbye was a flower on Rebecca's windowsill. Four years ago, Ethan left for the last time to take care of his mother, who has struggled with addiction his whole life. Two years ago, Rebecca was in a car accident that killed her father. She's been learning to...