"Guilty as Sin?" is a song by the American singer-songwriter Taylor Swift from her eleventh studio album, The Tortured Poets Department (2024). She wrote and produced the song with Jack Antonoff. It is a 1990s-tinged pop rock and soft rock track combining rock, country, and folk styles, accentuated by guitars and live drums. The lyrics see Swift's character sexually fantasizing about a man while being in a relationship.