High Quality Content by WIKIPEDIA articles! "I Knew You Were Trouble" (stylized as "I Knew You Were Trouble.") is a song by American singer-songwriter Taylor Swift from her fourth studio album, Red (2012). It was released on October 9, 2012, in the United States by Big Machine Records as the third promotional single from the album. Later, "I Knew You Were Trouble" was released as the third single from Red on November 27, 2012, in the United States. It was released as the second single from the album in the United Kingdom on December 10, 2012. The song was written by Swift herself and co-written and produced by Max Martin and Shellback.