My first real committed boyfriend was a big fan of a book about relationships which featured a concept called the Upper Limits. It postulated that relationships often followed a roller coaster pattern of going way way up – then falling quickly down because the way way up led people to a place where they felt they couldn’t get any happier.
Couples who are so blissed out in this love state will often find some way to plummet again, for fear of the maximum, of going so high you just run right off the rails of the ride.
They’ll find things wrong, they’ll stumble into quarrels over little things, they’ll get insecure or fearful.
We ran into this problem a lot in that relationship – though, in retrospect, I’m not so sure that the upper limits were quite as high as we thought.