Francis Crick kind of took many by surprize when, after the Human Genome Project, he made a statement to the tune of 'You, your joys, sorrows, memories, ambitions, your sense of identity, free will and love are no more than the behaviour of a vast assembly of nerve cells.' This is one factor that comes into play when we so movingly, inspired by 'greater and higher planes of consciousness,' fall in love.
I kind of like the way Helen Fisher, anthropologist at Rutger's University, put it in her work
Anatomy of Love--A Natural History of Mating, Marriage, and Why We Stray:
Almost everybody knows what infatuation feels like. That euphoria. That torment. Those sleepless nights and restless days. Awash in ecstasy or apprehension, you daydream during class or business, forget your coat, drive past your turn, sit by the phone, or plan what will say--obsessed, longing for the next encounter with "him" or "her." Then, when you meet again, his slightest gestue stops your pulse. her laugh dizzies you. You take foolish risks, say stupid things, laugh too hard, reveal dark secrets, talk all night, walk at dawn, and often hug and kiss--oblivious to all the world as you tumble through a fever, breathless, etherized by bliss.
①
The strongest factor in that euphora is the molecule phenylethylamine--or
PEA, for short. It is known as an excitant amine (amphetamine) and clearly causes the percieved reaction of elation, exhilaration, and euphoria. Other neuropeptides that play are role are
dopamine--which generally gives a feeling of well-being, and is intregal to the pleasure pathway;
opiods--which are also active in the pleasure circuitry along with dopimine (dopimne could be more focused on 'desire' and working hand in hand with endorphin and encephalins which may focus more on the pleasure event itself);
serotonin--which is basic, and is associated with a soothing, stable effect and is responsible for/or active in mood, memory, appetitie, sex, and sleep; and others such as noradrenalin, oxytocin, and cortisol.
Studies by Donatella Maraziti of the University of Pisa, in Italy, have shown evidence even for 'gender bending' when in this 'love cocktail' state. What is happening there is that some key hormones are shifting to what would otherwise be an 'opposite sex' state. ③
What all the studies and research far more conclude than not, is that our falling head over heels in love with another (or even not to such a strong degree) is no spiritual, non-physical event, but rather just the chemicals that make the brain react in certain ways, as that particular brain is wired for such, has receptors for such, and functions in the range of what is called the norm; for neurological systems.
There are other aspects of this state, such as the exclusive rights that the object of our love has (thus the 'only you' efffect); the 'mirrow activity' (which is a tendency to 'mirrow' mannerisms and body language (a kind of syncronizing of bodies) of the object of our love; and, alas, the weakening, decline of, and eventual lapse of such state. Yes, the '
mating drive' state does not last forever in most cases.
I would next like to bring up the connections between 'mating drive' and 'eros' and then tie those in with some points made by the girls above...and others...before I go on to show why having sex should not carry any image in the public's eyes as being 'dirty', 'wrong', 'immoral', and 'outlawed' (in most ways, that is).
① page 37;
② Why Men Don't Listen & Women Can't Read Maps, Peases, pp 176, 177, 262, 263; NewScientist 11, Oct 2003, p58; Anatomy of Love, H. Fisher, pp50-58; Scientific American, Feb. 2003, p36; Scientific American-MIND, Dec. 2007, p69; The Human Brain, S. Greenfield, pp113-115;
③ NewScientist 8 May, 2004, p14