The song "Sunday" by Hurts is about the longing and loneliness one feels when their relationship is on the rocks or has ended. The lyrics depict a sense of questioning and uncertainty, as the narrator reflects on the cracks in their love that have started to show. They express their realization that love is not easy and that being alone is much harder than they had anticipated. The narrator pleads for their partner to come back home, recognizing the agonizing nights spent without them. They long for the day when they can hold each other again, expressing their belief that love will prevail and they will reunite. However, until that happens, every Sunday feels lonely and melancholic for the narrator. They also acknowledge the possibility of their love coming to an end, wondering if it's the end of something that had just recently begun. They hold onto hope and wish for their partner to return, emphasizing that they are both young and need each other. The lyrics convey the sentiment of looking back in the future and realizing whether they were wrong or not. Despite the lingering doubts, the narrator remains hopeful and longs for their partner's return. They express the pain of being left in the cold if their partner does not come back, showing the desperation and vulnerability they feel. Overall, "Sunday" is a heartfelt and melancholic song that portrays the emotional struggle of longing for love and connection, while grappling with uncertainty and loneliness.