What happens when we fall in love? As a result of certain stimuli, the hypothalamus releases a powerful discharge of endorphins, but why exactly that woman or that man? Is there a release of odorless pheromones that correspond to a complimentary genetic signal? Or is it physical features that we recognize? A mother's eyes, a smell that stimulates a happy memory. Is love part of a plan? A vast war plan between two modes of reproduction. Bacteria and viruses are asexual organisms. With each cell division, each multiplication, they mutate and perfect themselves much more quickly than we do. Against this, we respond with the most fearsome weapon: Sex. Two individuals, by mixing their genes, shuffle the cards and create an individual who resists viruses better the more disimilar he or she is. Now, are we unknowing participants in a war between two modes of reproduction? In other words is it really planned or do we just follow whatever our hearts tells us? Im really confused..