Elon Musk‘s relationship with actress Amber Heard pained him more than his troubled relationship with his father, according to his biographer Walter Isaacson, Business Insider reported. Isaacson suggested Musk is drawn to drama, which was an element of his relationship with Heard. “Nothing hurt him more than that relationship,” Isaacson remarked. Musk and Heard’s relationship, which began at the 2016 Met Gala, experienced several breakups and makeups before finally ending in 2018. Isaacson’s biography, released last week, explores Musk’s “psychological turmoil” in his romantic relationships, including volatile arguments with Heard.