Love. What is it? Does it exist? Do you have to believe in the existence of the soul in order to believe in it?

The definition seems to vary from person to person and I am curious to know how other people would define it. I have thought for many years that I do not believe in the existence of the love that everyone talks about but it could just be that I have misunderstood/mislabeled the nature of the word. Also as I dont believe or remain skeptical about the existence of the soul so the connotation that love is the connection between souls would of course not be something I would be likely to find believable. Anyones thoughts on this would be welcome for the sake of persepective.