Romantic love quickly dies

The Register: "Romantic love normally lasts only a year, according to Italian boffins, whose findings would have Casanova spinning in his grave.
Scientists at the University of Pavia reckon that a brain chemical linked to feelings of euphoria - rather than amore' - in responsible for setting new lovers' hearts a flutter. Scientists looked at levels of proteins known as neurotrophins in the blood of men and women aged 18 to 31."