When 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.

Any kind of novelty or excitement drives up dopamine in the brain, and dopamine is associated with romantic love.

A world without love is a deadly place.

The main characteristics of romantic love are craving: an intense craving to be with a particular person, not just sexually, but emotionally.

I think romantic love evolved to enable you to focus your mating energy on just one individual at a time, thereby conserving mating time and energy.

When people tell you to walk a certain way, it's like not thinking of a purple tomato. You can't not do it.

Real competition can drive up testosterone, which boosts libido.