Sexual love is a troubled and problematic relationship in cultures where there is a strong sense of man's separation from nature, especially when the realm of nature is felt to be inferior or contaminated with evil.
That is the Mongolian creation myth: out of two different natures love is born. In contradiction, love grows in strength. In confrontation and transformation, love is preserved.
The mind which is created quick to love, is responsive to everything that is pleasing, soon as by pleasure it is awakened into activity. Your apprehensive faculty draws an impression from a real object, and unfolds it within you, so that it makes the mind turn thereto. And if, being turned, it inclines towards it, that inclination is love; that is nature, which through pleasure is bound anew within you.