"Cailin" is a song by the rock band Unwritten Law, released in 1998. The song portrays a person who was feeling lost, empty, and disconnected from the world, filled with guilt, hate, and fear. However, everything changed when they met someone named Cailin. Before meeting Cailin, the protagonist had thought they had loved others in the past, but no one had ever made them feel the way Cailin does. Cailin brought happiness and purpose into their life, filling the emptiness they once felt. The song expresses the protagonist's love for Cailin and acknowledges their imperfections. They feel a deep heartbreak when seeing Cailin cry and understand that they are sometimes wrong. The protagonist recognizes that Cailin is the reason they are still here today, giving them strength and a reason to keep going. The lyrics convey a sense of dependence on Cailin's love and support. They express the need for Cailin to stay near and be there for them during difficult times. The song suggests that as long as Cailin is by their side, everything will be alright. It portrays a deep and unconditional love for Cailin, appreciating their presence, and how they bring light into the protagonist's life. In summary, "Cailin" is a song about finding love, purpose, and solace in someone who enters your life and brings happiness, healing, and a sense of belonging. It captures the deep affection and gratitude the protagonist feels for Cailin, and the way their love transforms their world.