The Definition of Love

Socrates and Plato argued that concepts such as Love had universal, objective definitions.  Use the internet to explore various definitions of the concept of love.  How has the idea of love changed over time?  You might start by researching the idea of love present in the late Middle Ages in Europe called Courtly Love.  How does Courtly Love compare with our modern concept of love?  How does the concept of love differ from culture to culture?  Do men and women from the same culture define love the same way?