"Red" had sold eight million copies by 2014. The album earned several accolades, including four nominations at the 56th Annual Grammy Awards in 2014. Its single "I Knew You Were Trouble" won Best Female Video at the 2013 MTV Video Music Awards. Swift received American Music Awards for Best Female Country Artist in 2012, and Artist of the Year in 2013. She received the Nashville Songwriters Association's Songwriter/Artist Award for the fifth and sixth consecutive years in 2012 and 2013. Swift was honored by the Association with a special Pinnacle Award, making her the second recipient of the accolade after Garth Brooks. During this time, she had a short-term relationship with English singer Harry Styles.