Nor would the human body’s reaction have given us dramas like Romeo and Juliet, if oxytocin did not have its way. Together these two form the chemistry of love. The common symptoms of love, including sweaty palms, shaky knees and general restlessness, are caused by a natural chemical, Phenylethylamine (commonly dubbed the `love molecule'). Its release from the brain can be triggered from deceptively simple actions like the meeting of the eyes or touching of the hands. Heady emotions, racing pulses and heavy breathing results, and all these are (unfortunately) clinically explained as an overdose of this chemical. A very interesting thing is that chocolate is known to have very high level of this chemical…perhaps that’s the reason why it is considered a perfect gift for valentine. Or for your sweetheart.