Jonas Brothers Talk About Girlfriends, TV Series, Ben Stiller Flick On 'TRL'

Potential girlfriends 'have to be good to their moms,' Nick says.

There are tons of girls out there who would love to know how to win the hearts of the Jonas Brothers. And they'd better listen up, because the boys gave a primer on "TRL" Wednesday (August 13), as part of the show's Jonas Brothers Fan Week.

Want to date Kevin? Save the whining for your friends. "We're not ever really with people 'cause we're always traveling," Kevin said. "And you get on the phone and they're like, 'My day is awful, blah,' and you're like, 'This is not what I need right now!' "

Joe has a similar stipulation for his potential love interests. "This is hard, but if they are nagging and annoying, you're like, 'Go away.' "

Well, 15-year-old Nick has a slightly more charitable requirement. "They have to be good to their moms," he said.

This information may come into play when the boy take their act to their forthcoming Disney Channel television series. Earlier this year, Joe had described the sitcom thusly: "We are secret agents, and our cover is that we're a band." The series was tentatively titled "J.O.N.A.S." (standing for Junior Operatives Networking As Spies), but now it appears that approach has been scrapped.

"The concept is going to change a little bit," Kevin said. "Everyone knew it was going to be about spies, and that's changed a little bit, I guess, 'cause in the course of the last two years, the band has changed a little bit. We're going to be the Jonas Brothers going through life — like, going to school, but still being the Jonas Brothers."

The brothers also revealed that they recently met "Tropic Thunder" star Ben Stiller, and that a collaboration could be in the works. "I love Ben Stiller and we met him just recently," Joe said. "We were talking with him about doing a movie."

Speaking of collaborations, the dudes recently worked with Disney sibling and "Camp Rock" co-star Demi Lovato on her album. They said it was a great experience — but a little strange. "It was weird writing a song talking about a boy!" Joe laughed. Kevin added, "We were like, 'So this is what girls go through.' "

Also, the guys have just announced that they will be joining Nick's ex, Miley Cyrus, to co-headline the Concert for Hope benefit on September 14. The concert will help benefit the cancer research and treatment organization City of Hope.