C.S. Lewis

“The monstrosity of sexual intercourse outside of marriage is that those who indulge in it are trying to isolate one union (sexual) from all other kinds of union, which are meant to go along with it and make up the total union. The Christian attitude doesn’t mean that there is anything wrong about sexual pleasure any more than about the pleasure of eating. It means that you mustn’t isolate that pleasure and try to get it by itself, anymore than you ought to try to get the pleasure of taste without swallowing and digesting, by chewing things and spitting them out again”
- CS Lewis