Big Sean's motto may be "IDFWU," but looks like he can't say the same for his ex Ariana Grande. The rapper believes his diminutive girlfriend planned her awkward onstage PDA with Justin Bieber to deliberately hurt him, TMZ reports.
At Grande's April 8 show in Los Angeles, Bieber joined her for a song and embraced her from behind during the performance...a move that many have speculated lead to Grande and Sean's split.

| BIG SEAN AND ARIANA GRANDE'S CUTEST COUPLE MOMENTS |

But sources close to the Detroit rapper say that the breakup happened before the performance because Sean felt Grande is "immature." The move was just the final nail in the coffin.
The insiders say the end of their coupledom began in February, when Grande skipped Sean's performance at the House of Blues, which he believed was the most important night of his career so far, to prep for her own performance at the Grammys the next day. He felt the no-show was "extremely selfish," especially given that all his A-list friends, from Kanye West to Jennifer Lopez, made it a point to show up.
Sean also says he traveled "ten times more" to see her than she did to see him — but who's keeping track? He reportedly also didn't like that she urged him to blow tens of thousands of dollars to hop on a private plane to visit her, feeling that her loose relationship with money is another sign of immaturity.
Sounds like these two had a lot of issues to work out even before Bieber got involved. Sadly, it doesn't seem likely that "Big Grande" will reconcile after all.
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(Photo: Rick Kern/Getty Images for Samsung)