The oldest Jonas brother went traditional for the proposal: he got down on one knee and presented a custom-designed ring.
More from YourTango: Vote For The Next Bachelorette & Enter To Win A Fabulous Prize!
"She said yes, yes, yes like 500 times super fast in a row," Kevin said.
The bride- and groom-to-be are young—22 and 21 years old, respectively, and have been dating since May, 2007. Danielle didn't know who the Jonas brothers were when they met, and Kevin persued her—quite a change from the screaming fans who persue the Jonas clan wherever they go. The Pros And Cons of Marrying Young
Kevin is in the middle of a tour, and said "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."
More from YourTango: Which 'Looking' Character Has The Biggest Penis Size? No, Really
Kevin and Danielle haven't yet set a date for the wedding.