The song "Happen Again" by Sarah Mayfield is about longing for a past relationship to be reignited. The lyrics express the singer's deep longing for the return of a former lover and the hope for a second chance. Despite feeling uncertain about the possibilities of a reconciliation, the singer desperately wants the relationship to "happen again." The lyrics convey the pain of missing the person and the desire to make things right. The song captures the bittersweet emotions of hoping for a second chance while grappling with the fear of disappointment. Overall, "Happen Again" is a heartfelt plea for a lost love to return and for the opportunity to start anew.