Luke Bryan, right, and Caroline Boyer arrive at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Photo by: Jordan Strauss

Luke Bryan, right, and Caroline Boyer arrive at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)