UPDATE: A rep for Big Sean tells BET.com that the 27-year-old rapper's tweet referencing Justin Bieber is fake. ________________________________________________________________________________________________

Justin Bieber may have crossed the line with Big Sean’s girlfriend, at least according to the rapper’s deleted tweets. The Biebs was a special guest on Ariana Grande’s Honeymoon tour stop at the Forum in Inglewood, Calif., last night and the 21-year-old was either caught up in the moment or has a crush. 

Biebs got a little too close to Grande, putting both arms around the pint-sized beauty's waist as the two performed “As Long as You Love Me.” 

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Grande looked uncomfortable with the show of affection, but Sean —  who is currently on tour in Canada — caught wind of the embrace via social media and wasn’t happy. He tweeted “Wow” early this morning along with a more direct message to Bieber: “This kid is about to learn not to touch my girl like that. Beliebe that.”

Both tweets were deleted, but of course nothing is ever gone on the ‘Net. Screenshots of Sean's tweets have been circulating around social media for several hours.

Bieber, on the other hand, doesn’t seem too bothered (or maybe he hasn’t logged in to Twitter yet). He simply tweeted a “thanks for having me” to Grande after the show. 

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(Photos from left: Kevin Winter/Getty Images, Rahav Segev/Getty Images for Connected Ventures)