Country music star Jake Owen proposed to his girlfriend Lacey Buchanan during a weekend concert in his hometown of Vero Beach, Fla. Taste of Country said the singer got down on one knee while singing \"Don\'t Think I Can\'t Love You\" and asked Buchanan to marry him Saturday. She happily accepted, the report said. \"I\'m a happy man. Life is complete,\" Owen later said via Twitter. UsMagazine.com said Buchanan has appeared in Owen\'s music videos for \"Eight Second Ride\" and \"Barefoot Blue Jean Night.\"