What I've always wondered about is why he stayed with and even married her in the first place? I suppose he was dazzled by her beauty, quirkiness and "worldliness", having lived in Paris for years with Picasso's grandson. When you look at them in "102 Dalmatians" he was still in that gangly young phase. She wrapped him around her little finger those first years, banking on a glamorous life with a young actor whose star was rising on both sides of the pond. Maybe partly because of his conservative upbringing, he figured after 7 years he more or less had to marry her. And there was probably a physical aspect. An aunt of mine had a colorful way of expressing herself, one of her epic lines was "If you don't know why he married her, you know why he married her."
There could have been endless "defining moments" when he finally woke up and thought WTF am I doing here?! Whether it was this one, her incessant screeching telephone calls, her putdowns and lack of respect of his wishes about SM (among other things calling him a pussy for all the world to see, half naked pics, etc.), her drunkenness, laziness and slovenliness, her interference in filming of Harrow (calling producers, etc., to get him home), her total lack of private boundaries (selling her IVF story and Weinstein accusations to the Daily Mail). She just kept piling it on, but everyone has a cracking point.
The tragedy of it all is that he probably gave away years of his life for the sake of his children and has now lost them anyway. She was blabbing on last night about waiting for the food to arrive (McDonald's on NYE?!). In other words, she also violated his parental rights by denying him access to his children on New Year's Eve, as agreed upon. This deplorable shrew, who trumpets to the world about what a great mom she is, is too selfish and thick and twisted to see that she is denying her girls a father who wants to be part of their lives. So many children of divorce would love to have that.