Looks like Perez is gonna have to put his money where his mouth is because Ariana Grande is suing him!! Perez started a nasty rumor about singer Ariana Grande having a cocaine problem on Twitter (which he has since deleted), allegedly after Ariana's fans attacked Perez after he dissed her hair and fashion at the Grammys.Perez tweeted “@ArianaGrande Are you okay? I heard someone saw you doing cocaine

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