Big Sean, Ariana Grande BREAKING UP? ‘Problem’ Singer’s Boyfriend Reportedly Mad At Justin Bieber

Are Big Sean and Ariana Grande breaking up after 'Problem' hit maker was spotted getting some flirty action with Justin Bieber at a California show?

It isn't actually clear if Big Sean and Ariana Grande are breaking up, but sources say the 27-year-old rapper is quite furious over Ari's performance with JB Wednesday night.

Grande and Bieber sang a romantic duet in L.A. and JB may have been too touchy and feely during the performance such that Big Sean was pretty mad at him the entire time he was with the former Nickelodeon star onstage.

The Daily Beast reports that Bieber made a surprise appearance on Grande's latest stop for her "Honeymoon" tour. When they san "As Long As You Love Me," Bieber began to put his arms around Ariana's waist.

Of course, Grande was surprised by JB's uncalled for gesture, especially now that she's going steady with Kanye West protege Big Sean.

Following the performance, Big Sean took to Twitter to give a warning to Bieber saying, "This kid is about to learn not to touch my girl like that. Beliebe that."

However, the tweet has since been deleted but many of Big Sean's fans already read it before it was removed. 

Prior to their handsy moment, Bieber came up on stage to join Ariana in singing "Love Me Harder," according to E! News. He sang The Weeknd's lines.

Interestingly, it appears that Big Sean shouldn't really be mad at Bieber since he has said it himself that he is not looking for love right now.

"Well, at this point in my life I'm so focused on myself that I'm not looking for a girlfriend," Bieber recently told USA Today

"I'm just trying to make sure I'm 100 percent so I can add to the person I want to be with. I want a girl I can trust, who I can lean on. This business is hard, and I want someone I can confide in," he added.

Meanwhile, TMZ has slammed the previous reports that Big Sean has threatened Bieber after his performance with Grande.

"We're told Justin and Sean are good friends  ... and that he and Ariana are just fine," a TMZ source said. 

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