The movie presents the demise of their relationship as a beautiful, tear-soaked, mutually respectful conversation. Of course that didn't actually happen either. Jane's book describes a protracted breakup that comes to a head in a screaming fight on vacation. She also described devastation when Hawking announced by letter he was leaving her for his second wife, Elaine Mason. He ended up married to Mason for 10 years before that fell apart, and then he and Jane mended fences. Which, as it happens, the movie fudges too. It tries to present the rapprochement as coming when Hawking was made a Companion of Honour in 1989, but that actually happened before the couple separated.