Mario Dewar Barrett (born August 27, 1986) is an American R&B and pop singer. He is best known for his hit singles "Just A Friend" (2002) and "Let Me Love You" (2004), which won him two Billboard awards, as well as for appearing in the films Step Up and Freedom Writers. His latest album, Go! was released on December 11, 2007 in the United States, but was released in South Africa on October 9, 2007 under Gallo Records. On February 18, 2008, it was announced Mario will be appearing on Season 6 of Dancing with the Stars. His partner is Karina Smirnoff, who was paired with Mario Lopez in Season 3 of the series.   Wikipedia