We'll let Nick explain this one! "When we'd be onstage together, we could look at each other from across the stage and kind of know exactly what the other person was thinking, whether it was a wrong note that was played onstage or someone in the audience that was making us laugh, there was always sort of that bond that goes beyond words, really," explained Nick, referring, of course, to when Demi and the Jonas Brothers toured together. (They also appeared together in the films Camp Rock movies).
And that bond holds strong today at the Judges' Homes. He continued, "And it's great to see that now seven years into our relationship and friendship that we still have that. Even today we were looking at each other across the room as the contestants were singing and we knew exactly what the other was thinking."
On choosing Nick to help her out, Demi said, "We kind of grew up together. We've known each other since we were 14 and now we're 20 years old and we've continued to have successful careers and he's been all over the world, sold so many records, [and] hit songs. I mean, he knows what he's talking about. He's a really smart, intelligent guy, plus we just know each other so well and we have so much fun together."
Like Demi said, Nick's also a great mentor choice because, with the Jonas Brothers, he has sold a combined 20 million units worldwide, has earned more than 40 gold and platinum certifications, including achieving the Guinness World Record for most singles to enter straight into the U.S. top 20 in a year by a group (they had five in 2009), has crisscrossed the world on tour numerous times, and made the teen and tween girls swoon with the hit reality TV show, Jonas Brothers: Living the Dream on the Disney Channel.
Even with oodles of success, Nick admitted he was a little overwhelmed at the thought of serving as guest mentor. "My initial reaction was a little bit overwhelmed with the idea of having to decide these six very talented people's fate," he said. "I have to play devil's advocate and say, 'Yeah, well, they're all talented, but who's going to be the biggest star? Who's going to have the most potential to grow? And, who can maybe win this competition from this group?"
On why Demi's a great addition to THE X FACTOR, her long-time pal said, "She brings in a whole new audience for the show and I think probably hits the core of the audience of the show and has a lot of life lived in her 20 years of life...and brings some real heart and depth to this panel."
The Jonas Brothers are performing at Radio City Music Hall in New York City this Thursday (Oct. 11), marking the group's first performance together in three years. The band will perform their biggest hits, as well as debut new music set to release in 2013.
Check out the video interview with Nick Jonas here.
Judges' Homes episodes air TONIGHT, TOMORROW, and next WEDNESDAY at 8/7c on FOX.