C.S. Lewis said:
Those who are in love have a natural inclination to bind themselves by promises. Love songs all over the world are full of vows of eternal constancy. The Christian law is not forcing upon the passion of love something which is foreign to that passion’s own nature: it is demanding that lovers should take seriously something which their passion of itself impels them to do.
And, of course, the promise, made when I am in love and because I am in love, to be true to the beloved as long as I live, commits me to being true even if I cease to be in love. A promise must be about things that I can do, about actions: no one can promise to go on feeling in a certain way. He might as well promise never to have a headache or always to feel hungry. But what, it may be asked, is the use of keeping two people together if they are no longer in love? There are several sound, social reasons; to provide a home for their children, to protect the woman (who has probably sacrificed or damaged her own career by getting married) from being dropped whenever the man is tired of her. But there is also another reason of which I am very sure…
No one in his senses would deny that being in love is far better than either common sensuality or cold self-centredness. But, as I said before, “the most dangerous thing you can do is to take any one impulse of our own nature and set it up as the thing you ought to follow at all costs.” 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 when you do not like yourself. They can retain this love even when each would easily, if they allowed themselves, be “in love” with someone else. “Being in love” first moved them to promise fidelity: this quieter love enables them to keep the promise. It is on this love that the engine of marriage is run: being in love was the explosion that started it.
People get from books and plays and the cinema that if you have married the right person you may expect to go on “being in love” for ever. As a result, when they find they are not, they think this proves they have made a mistake and are entitled to a change — not realising that, when they have changed, the glamour will presently go out of the new love just as it went out of the old one. In this department of life, as in every other, thrills come at the beginning and do not last… The thrill you feel on first seeing some delightful place dies away when you really go to live there. Does this mean it would be better not to live in the beautiful place? By no means. If you go through with it, the dying away of the first thrill will be compensated for by a quieter and more lasting kind of interest. What is more, it is just the people who are ready to submit to the loss of the thrill and settle down to the sober interest, who are then most likely to meet new thrills in some quite different direction…
This is, I think, one little part of what Christ meant by saying that a thing will not really live unless it first dies. It is simply no good trying to keep any thrill: that is the very worst thing you can do. Let the thrill go — let it die away — go on through that period of death into the quieter interest and happiness that follow — and you will find you are living in a world of new thrills all the time. But if you decide to make thrills your regular diet and try to prolong them artificially, they will all get weaker and weaker, and fewer and fewer, and you will be a bored, disillusioned person for the rest of your life. It is because so few people understand this that you find many middle-aged men and women maundering about their lost youth, at the very age when new horizons ought to be appearing and new doors opening all round them.
sorry! you guys are great. 
