Justin Bieber and Arianna Grande News: Angry Tweets from Big Sean?

It seems that try as he might to project a more improved image of himself, controversy just won't give Justin Bieber a rest.

Bieber, 21, made a surprise appearance at Ariana Grande's concert for her "The Honeymoon Tour" at The Forum in Inglewood California, last Wednesday night and things got a bit flirty as they sang Grande's hit, "Love Me Harder." Bieber seemed to have gotten carried away with the performance and he couldn't seem to keep his hands off Grande, 21.

As pictures and videos of the performance made their way into social media, so did alleged tweets from Grande's boyfriend, rapper Big Sean. The initial tweet was a simple "Wow." Then it got a bit more emotional.

"This kid is about to learn not to touch my girl like that. Believe that," the rapper supposedly tweeted and then deleted. Obviously, everyone had a field day re-tweeting tweets even if they presumably were just photoshopped or faked.

A rep for Big Sean later categorically denied that the rapper made the tweets, reassuring fans that Sean has no problems with Justin, adding that they are "good friends."

It should be remembered though that Grande and Bieber share some "history." Back in August 2013, a picture of Bieber kissing her cheek was posted by Grande, angering Bieber's fans. She explained later it was not her fault, and that Bieber ambushed her with the kiss and basically forced her to post the photo on her social media account.

"I went to meet and greet with my grandparents, because my nonna has a massive crush on Justin Bieber," Grande explained then to MTV. "I took my phone and I went like this [selfie gesture] and I was just smiling, and he kissed me on the cheek. I didn't know what to do. I just walked out of the room. I got shy."

Grande claimed that Bieber's manager, Scooter Braun, told her to post the picture. "Justin says you have to post that picture," Braun allegedly said. Then Grande said Bieber tweeted her saying, "Post that pic." And so she did, and the backlash happened.

Whether it was because of the picture, or just a timing coincidence, Grande split up with then long-time boyfriend, Aussie celebrity Jai Brooks shortly after the picture circulated.