Exposed! Reason Why Big Sean Broke Up With Ariana Grande

Ariana Grande lashed out at Big Sean almost immediately after their breakup by staging Justin Bieber's behind stage embrace.

 According to TMZ, Sean claims it was him who broke off the relationship because she was "immature."

 The downfall of their relationship started in Febuary, when he made the most important appearance of his career at the House of Blues in West Hollywood. Everyone showed up, Kanye, Bieber, JLo, Chris Brown, Jay Z, ASAP Rocky, Tyga, Kylie and Kendall EXCEPT ARIANA. We're told she needed to get ready for the Grammy's the next day, which he found extremely selfish.



Sean also traveled to see her "10 times more" than she went to see him. He claimed once she demanded that he blow tens of thousands of dollars to take a private jet to see her.

 Sean, who grew up poor, felt she was a spendthrift... a sign of immaturity. But the crowning blow was just after the breakup. They were still talking and door was slightly open for reconciliation, when Bieber jumped onstage in L.A. and grabbed Ariana from behind. Even though Ariana pushed Bieber away , Sean believes it was all calculated not by Bieber but Ariana to hurt him.