There's all kinds of reasons that you fall in love with one person rather than another: Timing is important. Proximity is important. Mystery is important. You fall in love with somebody who's somewhat mysterious, in part because mystery elevates dopamine in the brain, probably pushes you over that threshold to fall in love.
Helen FisherWhen you look at the brain regions associated with picking up data from the body, a huge amount of the brain is devoted to picking up information from the lips and tongue.
Helen FisherWe're not very dangerous animals; we don't have a horn like a rhino or quills like a porcupine.
Helen FisherThe human brain is built to compare; it's Darwinian to consider an alternative when one presents itself.
Helen Fisher