Carly Rae Jepsen & Cody Simpson: 'Believe' Tour Buddies!

Carly Rae Jepsen and Cody Simpson get close on stage during their performance on Thursday night (March 7) at the O2 Arena in London, England.

The 27-year-old singer and her 16-year-old tour mate had performed together shortly before Justin Bieber collapsed on stage during his performance.

PHOTOS: Check out the latest pics of Carly Rae Jepsen

“I just stay mellow through it all ya know. There’s no drama, I love my fans and it’s simple,” Cody wrote on Twitter after the show. “I make music.. No matter where it takes me, I promise to stay real through it all.. for you.”