Depp accused Heard of cheating on him with Elon Musk in his defamation lawsuit in March 2019. Depp claimed in the lawsuit that Heard and Musk started their affair in March 2015, a month after Depp and Heard married. “Unbeknownst to Mr. Depp, no later than one month after his marriage to Ms. Heard, she was spending time in a new relationship with Tesla and Space X founder, Elon Musk,” the legal documents read. “