PhysOrg reports on a study that connects love and pain:
"It turns out that the areas of the brain activated by intense love are the same areas that drugs use to reduce pain," said Arthur Aron, PhD, a professor of psychology at State University of New York at Stony Brook and one of the study's authors. Aron has been studying love for 30 years. "When thinking about your beloved, there is intense activation in the reward area of the brain the same area that lights up when you take cocaine, the same area that lights up when you win a lot of money."
(Hat tip: 3QD)