You Lied by Green Day addresses themes of betrayal and disillusionment. The song explores the feelings of anger and frustration that arise when someone we trust deceives us. It delves into the emotional turmoil and the impact of lies on personal relationships. Key themes in the song include dishonesty, disappointment, and emotional conflict. Particularly poignant moments are found in the raw, candid lyrics that express the intensity of these emotions and the sense of being let down by someone once considered close.