Yeah, me too. I think it's a bit sad too. As I said, they seemed like such a compatible couple. According to what has been said so far, they just drifted apart I think. Sleeping in separate rooms for a couple of years, no-one else involved apparently. I guess all good things come to an end, and it's better to leave than stay in a marriage that is no longer working. (If it's possible to do that of course.)
Many people who are not quite rich (normal folk!) stay together because they have no choice/can't afford to leave and be alone. So if a marriage is not abusive or very toxic, and just stale/boring/no love left, some people tend to stay. Celebrities don't have that problem, and can split up and move on easier.
I hope they and their children are OK too. ❤