Elon Musk commiserates with noted divorcée Kanye West on his crumbling relationship with Grimes in an upcoming documentary on West’s chaotic fall from grace. In the scene, Musk, 54, lies on a massive mattress with Kanye West and and begins dishing about his relationship with electronic musician Grimes, aka Claire Boucher. Musk says, “Claire and I … we’re sort of … you know, in the same text stream, she’s like, ‘I love you.’ And then, like, you know, a day later, like, ‘I hate you.’ ” The scene, which was first reported on by The Hollywood Reporter, appears in an...