Amusingly written article on the basic neurochemistry of love. "There are two shrimp-size things on either side of your brain called the caudate nuclei. This is the gear that operates bodily movements and the body's reward system: "the mind's network for general arousal, sensations of pleasure, and the motivation to acquire rewards," Fisher writes. And when the test subjects looked at their sweeties, these things started singing "Loosen Up My Buttons" with the Pussycat Dolls!
This, then, kicked the party over to the tiny ventral tegmental area, a little peapod-size thingy that sends dopamine bopping around your head.