Men's preferences Women's preferences
1.Attractiveness 1. Commitment
1. Commitment 2. Social Skills
3. Social Skills 3. Resources
4. Resources 4. Attractiveness
5. Sexiness 5. Sexiness

Love on the brain

Four areas of the brain became active, and one area noticeably inactive, when the students had love on their mind. The active areas include one responsible for 'gut' feelings and one that is known to respond to euphoria-inducing drugs. The lights go off however, in the prefrontal cortex, an area that is overactive in depressed patients.

http://www.bbc.co.uk/science/hottopics/love/brain.shtml

We can feel stronger and deeper in love rather than defeated and overwhelmed.