From the archives.
We each have many types of love relationships — parents, children, spouses, friends. And they’re not always with people; you may love an animal, or a place. Is there a single idea or definition that runs through all the varieties of “love”? – Source
FYI, the title’s a great song from Foreigner.
Love… a single idea that covers all possible varieties of love… I’m afraid I don’t. At least not right now. There are days when I can pull definitions out of thin air, but today’s not one of those days…