Ariana Grande orchestrated Justin Bieber's come-from-behind stage embrace during her concert to lash out at ex-boyfriend Big Sean, alleges TMZ.

Sources closely connected to the couple told TMZ that Sean said he was the one who ended the relationship because she acted "immature."

Their relationship started to fail in February when Sean, 27, made an appearance at the House of Blues in West Hollywood. It was one of the biggest performances of his career. Celebrities like JayZ, Kanye West, Chris Brown, Justin Bieber, Jennifer Lopez and more showed up to support him. Grande, 21, was not there because she needed to prepare for the Grammy's, and sources say, he felt that was very selfish.

Sean traveled to see her frequently while she supposedly rarely went to see him. Sources say that he claimed she once asked him to spend tens of thousands of dollars to hire a private jet to visit her. Sean, who grew up in poverty, felt she was financially careless, and to him, that is a sign of immaturity.

The final blow to their relationship was after the breakup. They were still talking and a reconciliation seemed possible until Bieber jumped onstage while Grande performed in Los Angeles and embraced her from behind. Grande pushed Bieber away, but Sean believes it Grande staged it to hurt him, according to TMZ.

Sean, who was in Canada when he learned of Bieber's antics, tweeted, "This kid is about to learn not to touch my girl like that. Beliebe that."

Later, Sean said the tweet was a fake and not posted by him.

Meanwhile, Bieber was oblivious to the drama. He tweeted after the performance, "Love the stage. Thanks for having me @ArianaGrande and thanks LA. Gotta tour again soon :)"

Representatives for the rapper and singer initially claimed their work schedules and international tours were the cause of the break up.

Grande has not responded to Sean's claim she used the Biebs to hurt him.

As Latin Post previously reported, Grande posted this tweet to fans shortly after her break up with Sean:

She deleted the Twitter post after several hours. Perhaps she was not okay with it after all.

The couple announced their split earlier this week after eight months together.