The Anatomy Of Love
Romantic love is heavily associated with the same regions of the brain as drug addiction. Those who have it experience the same intensely pleasurable feelings, while those who are deprived of it experience the same crashing emotional lows and cravings. Consequently, it is fair to say that love is an addiction. Whether it is positive or negative, though, depends on whether the love is reciprocated, appropriate and nontoxic.
This site has quizzes, videos, research results and other information about love.