The Christian idea of marriage is based on Christ's words that a man and wife are to be regarded as a single organism - for that is what the words 'one flesh' would be in modern English. And the Christians believe that when He said this He was not expressing a sentiment but stating a fact - just as one is stating a fact when one says that a lock and its key are one mechanism, or that a violin and a bow are one musical instrument.
C. S. LewisNow Eros makes a man really want, not a woman, but one particular woman. In some mysterious but quite indisputable fashion the lover desires the Beloved herself, not the pleasure she can give.
C. S. LewisSomething quite unexpected has happened. It came this morning early. For various reasons, not in themselves at all mysterious, my heart was lighter than it had been for many weeks. ... And suddenly, at the very moment when, so far, I mourned H. least, I remembered her best. Indeed it was something (almost) better than memory; an instantaneous, unanswerable impression. To say it was like a meeting would be going too far. Yet there was that in it which tempts one to use those words. It was as though the lifting of the sorrow removed a barrier.
C. S. LewisLove...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.
C. S. Lewis