Fiction is our imaginary world. Within that world are our fantasies in all aspects of life. Love and sex are fundamental aspects and the fiction that we make of them will be a determining factor in it.
Most long for animal sex and fantasize about it. Others have deviations that should be studied. A small number have a neuronal craving, this produces the search for situations that complement their fantasy and share it in love and sex.
The Greeks classified love into four types, but none sustains neural love. This does not depend on kindness, devotion or any specific behavior ... It depends on the need generated in the minds...