The movie star has launched a defamation case against his ex-wife and in it he claims she and Musk started dating a month after the couple wed in February, 2015.
Depp's lawyers have obtained testimony from a security guard at the building where Heard used to live with the actor, who claimed under oath that he saw Musk visiting the actress while her then-husband was on location shooting a "Pirates of the Caribbean" movie.
But a rep for Musk tells The Blast, "Elon and Amber didn't start seeing each other until May, 2016, and even then it was infrequent. They were not on the same continent for most of this time. Their relationship didn't become romantic until much later."
According to court documents obtained by outlet, Alex Romero gave a deposition to Depp's attorneys on January 30. He claimed he would allow Musk entrance to the building "late at night" and the Tesla boss would stay for at least two hours "a few times a week".
According to the transcript, Romero recalled a time when he talked to his supervisor about Musk's visits to Heard, saying, "I told her it was really bad that I saw Elon Musk going inside the penthouse when Johnny Depp was not home."
He recalled escorting Musk to Heard's apartment in March, 2015, shortly after the couple had a famous argument, during which Depp claims his wife threw a glass vodka bottle at him, which resulted in the actor having to have his finger surgically reattached.
Depp sued Heard for defamation last week over an op-ed she wrote for The Washington Post last year (2018), in which she referred to herself as "a public figure representing domestic abuse". Depp denies ever abusing Heard.
Heard and Musk were first linked as a couple in 2016. They broke up in August, 2017, reconciled and then split for good.
Late last year (2018), Heard told The Hollywood Reporter, "Elon and I had a beautiful relationship, and we have a beautiful friendship now."