Kevin Jonas surprised his girlfriend Danielle Deleasa Wednesday morning by knocking on her New Jersey door and going down to his knee to ask her to marry him.

Then he handed her a cushion-cut diamond ring that he helped design with Jacob & Co.

What did she say?

She said yes, yes, yes like 500 times super fast in a row, the oldest of the Jonas Brothers tells People.

Jonas, 21, and Deleasa, 22, who met in May 2007 while vacationing in the Bahamas with their respective families, said they haven't set a wedding date.

The former hairdresser admits that, when she first met Kevin, she didn't know who the Jonas Brothers were. Kevin pursued her after seeing her walking on the beach with a flower in her hair.