What is love chemically?

I think that when a person falls in love there is an attraction just like any other stimulis (touch, feel, taste, etc..). As this stimulous reaches the brain it releases endorphins into the body causing a "Good Feeling". these endorphins are the same as we receive from excitement, elation, etc... Endorphins are known to cause a general wellness (phsycally and emotionally) and that is why it is said that "Love conqurs all." As for the chicken and the egg question. there will never be a difinative answer to this because people are unable to agree as opinions are like a$$holes and everyone has one. To me it would probally be a chicken as a chicken would have to sit upon the egg in order for it to hatch, but then again.... with the concept of evolution.... maybe that first chicken came from a mutated lizard egg thus the egg came first?!?!? So to answer this question you would need to make a time machine and go back to the very first chicken to find out, and make sure there are no loop holes as we all know that some still think the moon landing never happened. I hope that I have answered adequately. HAVE A GREAT DAY!!

I dont really know because I am not a scientist. However, I know that humans submit pheremones and that othe people pick up on those and that is part of the basis for love and for perfume companies making money also.