Anyway, since we are talking about love I would like to share with you what does LITERRALY mean to have chemistry in love, take a look at this picture & content below and you can see what and where is the chemistry leading to love is created in the human body.
Since it is all about chemistry, may be I should seek help from Dr.Ahmed Zewail to know why the hell I have such a great immunity against falling in love!!!!
"Recent studies in neuroscience have indicated that as people fall in love, the brain consistently
releases a certain set of chemicals, including pheromones, dopamine, norepinephrine, and serotonin, which act in a manner similar to amphetamines, stimulating the brain's pleasure center and leading to side effects such as increased heart rate, loss of appetite and sleep, and an intense feeling of excitement. Research has indicated that this stage generally lasts from one and a half to three years." Winston, Robert (2004). Human. Smithsonian Institution.