Why we love

The study of human relationships has an incredibly long history and prior to the birth of modern psychology as we know it today, many attempts have been made to analyse intellectually the factors that characterise our relationships. Philosophers in classical Greece debated the fundamentals of love for example but it was not until a more scientific approach to analysing nature was adopted that research into relationships started to accelerate.

Helen Fisher examines evolution and the social importance of love in this TED Talk, Why we love, and why we cheat.