Interesting thing about that. It seems that love is in the eye of the beholder. Each of us see in our own fashion what is pleasing to some, is not pleasing to all. There is a scientific explaination that has to do with the rods and the concept of light hitting an object and what I see is contrary to what you see. Which makes the whole notions of love more cut and dry.
I'd like to think that love is finding that soul mate. The person who loves you for no matter what. The person that will fuss and argue with you when you are doing things that could put you in danger either by words or actions.
Finding your soul mate ... Ah, there is the challenge.