The Jonas Brothers' have fanned the tween love flames in Dallas. Nokia Theater had to institute special rules for parents purchasing tickets to the boys' February 28 show. The day the tickets went on sale -- January 19 -- the boy band took to the rooftop of Nokia and offered up a preview. Needless to say, the tickets sold-out quickly. We just discovered a video of the Brothers' "surprise" performance on top of Nokia. Watch it with your little sister. She'll love you. Oh, a second Jonas Brothers show at Nokia has been added for March 3. Hit up Ticketmaster or Nokia Theater for tickets. -- Chelsea Ide