Christian Marriage

Being in love is a good thing, but it is not the best thing. There are many things below it, but there are also things above it. You cannot make it the basis of a whole life. It is a noble feeling, but it is still a feeling. Now no feeling can be relied on to last in its full intensity, or even to last at all. Knowledge can last, principles can last, habits can last; but feelings come and go. And in fact, whatever people say, the state called ‘being in love’ usually does not last.

But, of course, ceasing to be ‘in love’ need not mean ceasing to love. Love in this second sense—love as distinct from “being in love”—is not merely a feeling. It is a deep unity, maintained by the will and deliberately strengthened by habit; reinforced by (in Christian marriages) the grace which both partners ask, and receive, from God. They can have this love for each other even at those moments when they do not like each other; as you love yourself even when you do not like yourself…It is on this love that the engine of marriage is run: being “in love” was the explosion that started it.

Mere Christianity, page 108-9—C.S. Lewis