Love exist but in the eye of pure science it is a reaction of a hormone that makes your brain happier and excited whenever we experience this emotion that we call love. A mixture of a hormone burst that make our hypothalamus produce more.
Yes you have it right: "love" is hardwired chemical reactions needed to ensure
survival and
thrival of your genes, and nothing more. Many people make the mistake to think love is something else and something more than that, something moony and rosy, while in reality it isn't. This is the cold hard truth of the matter.