The song "Old Friend" by Mothé is about a person reflecting on a past relationship with someone who is now just an old friend. The lyrics describe the bittersweet memories and feelings that come with seeing this person again after time has passed. The protagonist reminisces about the moments they shared, the conversations they had, and the connection they once had. Despite wanting to apologize and make amends, the protagonist realizes that they will never be more than just an old friend to this person. The song captures the nostalgia, longing, and acceptance of the past that many can relate to in relationships that have changed over time.