I can see how in some ways, the flippancy with which people like Boris treat relationships, isn't an improvement on the 50s. But on the other hand, in the 50s there is no way I would have been able to divorce and manage alone with my DD as a disabled woman. And my marriage was making me feel suicidal. So I think it's tricky - there is very much both good and bad from the social change.
I do agree about standards of behaviour, but I suppose society in general seems to have "slipped" so much in that regard, that Boris seems more normal. Not that that is necessarily a good thing.
@AlsoHuman - I just remembered about Robin Cook. When the papers found out about his affair and he had to decide between his mistress and his wife. So he chose his mistress and told his wife there and then that they were over. Harsh! That must have been late 90s early 00s. Not long ago at all.