Humans are animals. Mammals, specifically.
I was saying that that's not what love is, it's what drives us to fall in love. Humans have an incessant need to be around others. A human without any social connections usually isn't very happy. Our strive to connect with others, that overwhelming desire to find "the one", as they call it, is what drives us to get to know others and eventually fall in love with them. That's what I was getting at.