When you fall in love, 12 areas of your brain work together to release euphoria-inducing chemicals. The love feeling also affects sophisticated cognitive functions, such as mental representation, metaphors and body image.
Science Daily reports:
"The study also shows different parts of the brain fall for love. For example, unconditional love, such as that between a mother and a child, is sparked by the common and different brain areas, including the middle of the brain. Passionate love is sparked by the reward part of the brain, and also associative cognitive brain areas that have higher-order cognitive functions, such as body image."