Thanks Gail, I thought Tolstoy
must have had a go at it. I have read Anna K. but can't remember it; I will investigate.
Meanwhile I found this quote from
Monogamy by Adam Phillips which chimes with what Birthe is saying...
"More has been written about how relationships don’t work, than about how they do. We have virtually no language, other than banality, to describe the couple who have been happy together for a long time. We would like them to have a secret, we would like them to have something they could give us. Or that we could give them, other than our suspicion.
There is nothing more terrorising than the possibility that nothing is hidden. There is nothing more scandalous than a happy marriage."
Monogamy.1996. Faber and Faber.
Later P.S.
Found this essay illustrating your Tolstoy example, Gail. Yes, he was very interested in showing what a good marriage could be.
http://www.agorajournal.org/x9361.html
"What counts in making a happy marriage is not how compatible you are, but how you deal with incompatibility".Tolstoy.