Kevin Jonas Is Engaged

Kevin Jonas surprised his girlfriend Danielle Deleasa by showing up at her doorstep in New Jersey early Wednesday morning and dropping down to his knee to ask her to marry him. Presented with a cushion-cut diamond ring that Jonas designed with Jacob & Co., Deleasa couldn't believe what was happening.

Then, "She said yes, yes, yes like 500 times super fast in a row," the oldest of the Jonas Brothers tells PEOPLE exclusively.

Jonas, 21, and Deleasa, 22, who met in May of 2007 while vacationing with their families in the Bahamas, haven't set a wedding date yet. "It still feels like a dream," she tells PEOPLE.

Overnight Flight

When Deleasa, a former hairdresser, first met Jonas two years ago, she admits, "I didn't know who the Jonas Brothers were." It was Kevin who eagerly pursued her after meeting her and then spotting her walking on the beach with a flower in her hair.

Jonas popped the question after arriving in New Jersey on an overnight flight from a concert in Vancouver. "It was tough performing last night, knowing that I was going to ask the biggest question in my life to the most amazing girl in the world," he says.

And while the news is bound to break a lot of young girls' hearts, the Jonas family couldn't be happier.

"Our hearts are filled with joy today and we are happy to share with you that our son Kevin has asked Danielle for her hand in marriage," parents Denise and Kevin Jonas Sr. say in a statement to PEOPLE. "Her answer was yes, and it is such a blessing that she will be joining our family. Kevin and Danielle have not yet set a date. Family is very dear to us, and we hope we have raised Kevin to be a wonderful man and husband. Please join us in our family's celebration and in congratulating Kevin and Danielle. Thank you for all of your support."

And younger brothers Joe and Nick said on their Twitter page: "Congrats big brother.....Dani welcome to the family, we can't wait to have you join us on the road!"

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