Humans have a natural inclination to form bonds with one another through social interactions, be it through verbal communication or nonverbal gestures. With some individuals, these social interactions can span beyond what one would typically view as a platonic relationship. Positive romantic relationships are a crucial part of society in that not only do these relations affect those that are in participation, but they can also have an influence on those that are in close vicinity.
The conception of romantic love was popularized in Western culture by the concept of courtly love. Chevaliers, or knights in the Middle Ages, engaged in what were usually non-physical and non-marital relationships with women of nobility of whom they served. These relations were highly elaborate and ritualized in a complexity that was steeped in a framework of tradition, which stemmed from theories of etiquette derived out of chivalry as a moral code of conduct.