It's kind of like Marriage Encounter, only it's for couples getting married.

I have married thriteen couples. I'm about to do a marriage next month.

... having been with Boaz for so long that she could predict every one of his moves, their sex life was more like a race to see who came first.

Couples tend to think that being single is always singular. Singles tend to believe that being a couple is always copulatory.

My mother repressed a shudder of apprehension, for, being more rapid in perception than my father, she grew alarmed on his account over things which only began to vex him a moment later. Whatever might cause him annoyance was first noticed by her, just as bad news of France is always known abroad sooner than among ourselves.

A single person is a manageable entity, whom you can either make friends with or leave alone. But half of a married couple is not exactly a whole human being: if the marriage is successful it is something a little more than that; if unsuccessful, a little less. In either case, a fresh complication is added to the already intricate business of friendship: as Clem had once remarked, you might as well try to dance a tarantella with a Siamese twin.