Update: Selena reportedly went backstage with her besties before Justin's performance.

Justin Bieber burst into tears while performing "What Do You Mean?" at the 2015 MTV VMAs! The pop star flew in the air and then got super-emotional in front of the audience, including his ex-girlfriend Selena Gomez.

How did the actress react? She just watched passively from the audience, looking a bit sympathetic, but didn't seem too affected.

Though it's hard to tell if she was checking her phone at the time, some fans are saying that she was on her cell during at least some of his performance.

Since this song is rumored to be written about "The Heart Wants What it Wants" singer, maybe he was just so overcome with emotion about performing in front of his ex? Or perhaps he got overrun with feelings about singing a song that means a lot to him — in front of a huge crowd, no less. Either way, we're shocked!

Can you believe that Justin cried? Let us know what you thought about his performance in the comments!

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