All of our friends in Paris, who were expats (or one of the couple was, and the other French) have split up. Of my expat school gate friends from Brussels, they have all split up too. In nearly every case, the man ended it, and has moved on to a new, younger wife and a second family. The wife is either left with the kids, to struggle in a country that isn't "home" or heads back to the UK with the kids, and they hardly ever see their father. Our UK friends are not like this! It all seems a bit bizarre to me.