The song "On The Metro" by Girls Aloud tells a story of an encounter at a party. The lyrics describe the protagonist's experience at her favorite party spot where she sees a shy and out-of-place guy. Despite his awkward moves, she senses that he is serious about approaching her. The protagonist leaves her heart at the disco, indicating that she was emotionally invested in the moment. However, when she returns from the powder room, the guy has disappeared. This leaves her feeling heartbroken and confused. Throughout the song, there is a reference to "a hundred o's and x's lighting up the dark" which metaphorically represents the excitement and potential connection that quickly turns into uncertainty and a question mark. The lyrics express the protagonist's lament about not having the guy's contact information other than his name. She reflects on the shared feelings they might have had but acknowledges the lack of a way to reach out to him. Ultimately, she finds herself crying on the metro while writing his name on the window, longing for their lost connection. Overall, "On The Metro" portrays the fleeting nature of romantic encounters and the subsequent longing and confusion that can arise when a potential connection disappears.