Ariana Grande fans were in for a special treat last night: A surprise performance from Justin Bieber!
The Biebs joined his pal onstage at The Forum in Inglewood, Calif., where he first accompanied her for a performance of "Love Me Harder" (he sang The Weeknd's lines).
As you can see in Just Jared's concert footage, Justin and Ariana got a little flirty with their dance moves. And while the Biebs didn't get too grabby, it seems he was still too handsy for Ariana's boyfriend Big Sean. The rapper reportedly tweeted (and quickly deleted),"This kid is about to learn not to touch my girl like that. Beliebe that." But, Big Sean's rep tells E! News that the tweet was fake...so all is well?
In any case, after Justin was perhaps a little too playful during "Love Me Harder," Ariana let him take the stage solo. "You go ahead and take a break," he encouraged her. "Grab some water or something!"