Helen Fisher: Why we love, why we cheat | TED Talk | TED.com

Three different brain systems:

sex drive – craving for sexual gratification, but the focus is on nobody in particular;

romantic love – elation, obsession of early love, which focuses your energy on one person;

attachment – sense of calm and security you feel for a long term partner, and allows you to tolerate them long enough to raise children.

For millions of years women came home with 60-80% of the evening meal – the double family income was the standard

Moving back to a collaborative society where the talents of both men and women are understood, valued and employed.

We are not an animal that was built to be happy, The happiness we find we make, and we can make good relationships with each other.