"It's a very complicated subject. There are so many different kinds of love. I cannot define it, but I know it when I see it." - LisaRose
I agree, and this quote is for both of you:
It is a splendid thing to think that the woman you really love will never grow old to you. Through the wrinkles of time, through the mask of years, if you really love her, you will always see the face you love and won. And a woman who really loves a man does not see that he grows old; he is not decrepit to her; she always sees the same gallant gentleman who won her hand and heart. - Robert G. Ingersoll (1833 – 1899)
Love is a chemical reaction.
That initial giddiness that comes when we're first falling in love includes a racing heart, flushed skin and sweaty palms. Researchers say this is due to the dopamine, norepinephrine and phenylethylamine we're releasing. Dopamine is thought to be the "pleasure chemical," producing a feeling of bliss. Norepinephrine is similar to adrenaline and produces the racing heart and excitement. According to Helen Fisher, anthropologist and well-known love researcher from Rutgers University, together these two chemicals produce elation, intense energy, sleeplessness, craving, loss of appetite and focused attention. She also says, "The human body releases the cocktail of love rapture only when certain conditions are met and ... men more readily produce it than women, because of their more visual nature."
Another possible explanation for the intense focus and idealizing view that occurs in the attraction stage comes from researchers at University College London. They discovered that people in love have lower levels of serotonin and also that neural circuits associated with the way we assess others are suppressed. These lower serotonin levels are the same as those found in people with obsessive-compulsive disorders, possibly explaining why those in love "obsess" about their partner.