2010 American Idol winner Lee DeWyze is engaged to his girlfriend of eight months, model/actress Jonna Walsh.

"I'm excited," says DeWyze, 25, told PEOPLE, which reported the Illinois native proposed July 16 over champagne on a private yacht at Disney World in Orlando.

"Jonna is a Disney freak," he told the magazine. "They were playing love songs on the boat and I got down on my knee and asked her. I had a speech prepared but it all went out the window so I just asked her. She started crying and I said, 'Is that a yes?'"