Screwtape

[T]he humans are to be encouraged to regard as the basis for marriage a highly-coloured and distorted version of something [God] really promises as its result. Two advantages follow. In the first place, humans who have not the gift of continence can be deterred from seeking marriage as a solution because they do not find themselves 'in love', and, thanks to us, the idea of marrying with any other motive seems to them low and cynical. Yes, they think that. They regard the intention of loyalty to a partnership for mutual help, for the preservation of chastity, and for the transmission of life, as something lower than a storm of emotion.
~The Screwtape Letters