The brain of someone in love exhibits unique activity patterns, particularly in areas like the amygdala and the nucleus accumbens. The amygdala is linked to gut feelings, while the nucleus accumbens is related to the brain's reward system, often triggered by pleasurable activities and even drugs. This suggests that love can evoke feelings that resemble the high experienced by drug users.

This intriguing comparison highlights that romantic love does not produce the same neurological response as other intense emotions. Instead, it resembles the brain activity of someone under the influence of a stimulant, indicating that love can be as addictive and stimulating as drugs. Jodi Picoult, in her book "House Rules," emphasizes that falling in love may be more about these pleasurable brain reactions than merely emotional connections.