Sociobiology
"Sociobiologists point to the preeminence of heart over head at such crucial moments... bonding with a mate"; suggest that 'the answer to why we fall in love encompasses...complex neurochemical processes that occur in our brains when we are attracted to another person'; and 'tell us that when we fall in love we are falling into a stream of naturally occurring amphetamines running through the emotional centres of our very own brains'.
Arguably however 'explanations like these neo-Darwinist ones...obscure what it is in sexual passion that so often leads not to attachment but to impossibilities of attachment, whether tragic or comic or tragicomic', as well as just what in falling in love is 'so frightening to us human beings and so frighteningly difficult'.
Read more about this topic: Falling In Love