A very simple and very complex question at the same time: What is love?

Our friends from the French site MinuteBuzz (With Wekapture) made this video in which they ask people of all ages about love. " What is love?"," Tell us about your first love ..."," What does love do?"," Your last "I love you"?"," Any advice to other generations? Are the avenues for discussion. A theme very simple and so complex at the same time… You what would you have answered?