Wanna date a Jonas?

Think you're a potential match for one of the Jonas Brothers? On Tuesday ET was backstage with the uber-popular trio at their "TRL" hosting gig -- and on the MTV show, the young heartthrobs revealed their likes and dislikes in terms of girlfriends.

"This is hard, but if they are nagging and annoying, you're like, 'Go away,'" admitted Joe, who turns 19 on Friday.

"They have to be good to their moms," 15-year-old Nick added.

And Kevin, 20, dished: "We're not ever really with people 'cause we're always traveling. 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!'"