"Tearin' Up My Heart" is a song by American boy band NSYNC, from their eponymous debut studio album, 'N Sync (1997). The song was written by Max Martin and the producer Kristian Lundin. It was released by BMG Ariola in Germany on February 10, 1997, and by RCA Records in the United States on June 30, 1998, as the second single from the album. A dance-pop and teen pop song, it contains a pop-sounding melody, a strong beat, and a funk-styled pre-verse breakdown, with vocal harmonies performed during the refrain. The lyrics depict the ambiguous future of a romantic relationship.