Ariana Grande fans were treated with a special Justin Bieber number at her concert, with the Biebs joining her onstage for a performance of "Love Me Harder," as noted by E! News.

In the concert footage from Just Jared, however, Justin was a bit flirty while dancing with Ariana. Apparently, Big Sean thought Justin was too handsy with her for him to be comfortable with.

The rapper was reported to have taken his feelings about the performance on Twitter, where he told his followers, "This kid is about to learn not to touch my girl like that. Beliebe that."

However, reps for the rapper told E! News that the tweet was fake, which didn't explain much, either.

Ariana did not like how handsy Justin was either and opted to leave the stage when he encouraged her to take a break and telling her to "grab some water or something!"

He then hyped up the crowd with another song, and Ariana joined him for another joint performance, this time, of his 2012 hit, "As Long As You Love Me."

If previous interviews are to be believed, Justin is not ready to be in a relationship again. He recently told USA Today, "Well, at this point in my life I'm so focused on myself that I'm not looking for a girlfriend. I'm just trying to make sure I'm 100 percent so I can add to the person I want to be with."

He went on to say, "I want a girl I can trust, who I can lean on," he said. "This business is hard, and I want someone I can confide in. I'm still young. I'm still trying to figure out who I am, and I'm just trying to have fun."

According to MTV, Justin is returning to the music business slowly, as he tweeted on Wednesday that he's "working on music," thanking Ariana for the chance to get back on his feet and hinting at his excitement to get back to his career.

Whether its dating or a singing performance, do you think it was appropriate how Justin handled his stage time with Ariana, or was it okay considering that they were both performers and just doing their jobs?

Check it out and see for yourself:

What do you think of the alleged Big Sean tweet? Was it a real one that he deleted moments after? Did a hacker post it or was it photo shopped?