Mario Dewar Barrett, who performs under the mononym Mario, is an American R&B singer-songwriter, actor, dancer and model. He is best known for his hit singles "Just a Friend 2002" (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. He has released four studio albums: Mario (2002), Turning Point (2004), Go! (2007), and D.N.A. (2009).