If falling in love is not love, then what is it other than a temporary and partial collapse of ego boundaries? I do not know. But the sexual specificity of the phenomenon leads me to suspect that it is a genetically determined instinctual component of mating behavior. In other words, the temporary collapse of ego boundaries that constitutes falling in love is a stereotypic response of human beings to a configuration of internal sexual drives and external sexual stimuli, which serves to increase the probability of sexual pairing and bonding so as to enhance the survival of the species. Or to put it in another, rather crass way, falling in love is a trick that our genes pull on our otherwise perceptive mind to hoodwink or trap us into marriage. Frequently the trick goes awry one way or another, as when the sexual drives and stimuli are homosexual or when other forces-parental interference, mental illness, conflicting responsibilities or mature self-disciplinesupervene to prevent the bonding. On the other hand, without this trick, this illusory and inevitably temporary (it would not be practical were it not temporary) regression to infantile merging and omnipotence, many of us who are happily or unhappily married today would have retreated in whole- hearted terror from the realism of the marriage vows.
M. Scott Peck, The Road Less Traveled: A New Psychology of Love, Traditional Values, and Spiritual Growth
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