Since then, the singers have gone through a roller coaster (rehab and a breakup with Nick's brother for Demi, and a split from his brothers for Nick), but through it all, the pair have only become closer, growing together both musically and personally, calling each other best friends, becoming business partners for a record label, and going on tour together.
To celebrate Demi and Nick's stronger-than-ever friendship, we're looking back at their cutest pictures together.
I think it's nice for an audience as well -- they get to watch Nick and Demi grow up, not only together, but also musically. So, they've found great support with one another and they lean on each other creatively. Demi Lovato & Nick Jonas: A Timeline of Their Friendship Demi talks about writing "Gonna Get Caught" when you two were dating.
"Our guitar player is getting her tonsils out, so it forced us to get some down time." But you get the feeling no one was twisting his arm about Mexico.
On her struggles, he added, “She’s the best version of herself I’ve ever known.
It's been more than a decade since Demi Lovato and Nick Jonas bonded on the set of Camp Rock, their big break as Disney Channel stars, when they were both just 16 years old.
RED FLAG One thing is to claim that you are best friends. It is possible to have a guy best friend or a girl best friend if you are a guy, but to have matching couple Halloween costumes? Click through the gallery to see other moments where Nick and Demi seemed to be more than just friends.
Demi Lovato’s friendship with Nick Jonas goes back to their Disney days, but these days, she’s giving him some advice that would shock their former bosses at the House of Mouse.