"Hurts's song Affair" tells the story of a passionate and forbidden love affair. The protagonist is deeply in love with someone, but they know that being together is wrong. Despite this, they crave the physical connection and desire to be with their lover. The lyrics depict a sense of longing and desire, with the protagonist describing the affair as a "rosy affair" that took their heart for a little while. They acknowledge that loving their partner is the greatest mistake they ever made but still wish they could stay with them. The protagonist reminisces about dancing all night with their lover, but now that they're not around, they feel lost and lonely. They encourage their lover to find someone else but promises not to let them down. Although deeply in love, the protagonist realizes that their affair is causing trouble and decides to go home, even though it breaks their heart. They can't pretend anymore, and they know that they need to let go of their lover, even if it hurts. Overall, the song portrays a bittersweet and conflicted love affair, with the protagonist torn between their love for their partner and the knowledge that being together is wrong. It's a story of surrendering to desire but ultimately realizing the need to move on for the sake of their own well-being.