David Pescovitz over at BoingBoing is reporting that researchers at Pavia University have found an association between early romantic love and nerve growth factor (NGF):
Apparently, levels of NGF in the bloodstream were significantly higher in subjects who were in the early stages of romance than individuals not in a relationship. Interestingly, “subjects in love who-after 12-24 months-maintained the same relationship but were no longer in the same mental state to which they had referred during the initial evaluation” did not have elevated NGF levels.
More at BoingBoing…