Lovato Reunites with Ex-Boyfriend Joe Jonas for “Camp Rock” Duet

Demi Lovato has reunited with an ex-boyfriend…

But it’s not what you think!

Demi Lovato & Joe Jonas

The 22-year-old part-Mexican American singer-actress joined forces with her ex, Joe Jonas, for a special Camp Rock reunion when she made a tour stop in Los Angeles over the weekend.

Nearly six years after the Disney Channel original movie that they starred in together premiered, the two singers performed one of the songs from the film for the crowd at the Staples Center.

“You want to hear me play a really old song?” Lovato said while introducing the song. The intro of “This Is Me” kicked in and fans in the audience began freaking out. They sang along and screamed louder when Jonas appeared onstage mid-song to sing his part. She gave him a big hug after finishing the duet.

After the performance, Jonas posted an Instagram photo of him and Lovato onstage, saying, “Surprise LA! @DDLovato thank you for having me.” He also shared a video taken during a rehearsal and captioned it, “Tonight was amazing. Fun keeping this a secret.”

Jonas wasn’t the only special guest at Lovato’s L.A. concert. The “Really Don’t Care” hitmaker was also joined by Blink-182‘s drummer Travis Barker. She took to Instagram to share several photos of her performing with her guests.

Lovato to Mentor the Tweens on “The X Factor”

She’s a former Disney star with plenty of experience as a tween sensation… And, now Demi Lovato will be sharing her knowledge to help other potential artists realize their tweenage dreams

In her new role as a judge on Fox’s The X Factor, the 20-year-old part-Mexican American singer/actress will serve as a mentor to solo singers between the ages of 12 and 16.

Demi Lovato

And Lovato, who ranked as one of Billboard.com’s 21 Under 21 last year, will be getting an assist from her former Camp Rock co-star, Nick Jonas. He’ll mentor Lovato’s team during the judges’ house round, according to The Hollywood Reporter.

During this phase, the judges will mentor 32 acts who are divided into four different categories (8 acts in each category).

Along with Lovato handling the solo singers ages 12 to 16, Britney Spears will mentor singers ages 17 to 24, L.A. Reid will guide contestants ages 25 and over, and Simon Cowell taking on the groups.

The second season of The X Factor will premiere Wednesday, September 12 at 8:00 pm on Fox.