The 21-year-old Jonas is one-third of the popular Jonas Brothers, along with Joe and Nick Jonas.
In a statement, Kevin's parents, Kevin Sr. and Denise Jonas, said they were "filled with joy."
The young couple have not yet set a date. Their engagement was first reported by People magazine.
People quoted Kevin Jonas as describing his girlfriend's reaction as "yes, yes, yes like 500 times super fast in a row."
"Camp Rock" sequel on track for 2010 debut
Jul 7, 2009 10:00 pm PDT
The Jonas Brothers and Demi Lovato are headed back to "Camp Rock," but the sequel to last year's top-rated cable telecast will feature a new director and writer, not to mention a plot that borrows from Shakespeare. "Camp Rock 2 The Fi...
One Jonas Brother Off the Market: Kevin's Engaged!
Jul 1, 2009 5:00 pm PDT
There are only two Jonas Brothers left. For girls to fantasize about marrying one day, that is! Kevin Jonas, 21, has proposed to his girlfriend of two years, Danielle Deleasa, E! News confirmed Wednesday. Deleasa, 22, met Kevin—th...
What Slump? Jonas Brothers Rule the World
Jun 24, 2009 10:00 am PDT
Remember how, when the Jonas Brothers' movie underperformed a few months back, everyone was shouting about it being the end of the sibling squad's career. Well, the doomsayers can suck it (at least for now, more on that later): Th...
Nick Jonas lobbies for diabetes research
Jun 24, 2009 1:00 am PDT
The youngest Jonas brother spent Tuesday lobbying Washington's power brokers on behalf of diabetes research starting with the big guy, President Barack Obama. Clad in a white oxford shirt (no tie) and a gray blazer with the sleeves...
Jonas Brothers: What It's Like to Work With Them
Jun 23, 2009 7:00 am PDT
Money, fame and fans haven't changed the Jonas Brothers one bit. So says Honor Society, one of the opening acts for the Jo Bros' just-launched world tour. We caught up with the group the other day at a private home in Los Angeles,...