Lee DeWyze has something to celebrate — he’s now engaged! The ‘American Idol’ winner has popped the question to his girlfriend of eight months, Jonna Walsh.

DeWyze, 25, and Walsh were visiting Disney World when he asked for her hand in marriage.

“I’m excited,” DeWyze tells PEOPLE. “Jonna is a Disney freak.”

The singer proposed on a private yacht during the park’s fireworks display on July 16. He even rehearsed the proposal, but it didn’t go as he hoped it would.

“They were playing love songs on the boat and I got down on my knee and asked her,” he said. “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?’”

Walsh may look familiar to DeWyze’s fans. That’s because she starred in his ‘Sweet Serendipity’ video. During the casting, he thought she was “cute” and picked her for the video. They hit it off and the rest is history.

“When you know, you know,” he says. “We both feel that way. We don’t need to be together 20 years before we figure it out.”

Currently, they are planning a wedding in the fall of next year.

[PopCrush]