I'm coming in a little late here, but can't all emotions such as love be broken down to certain chemical reactions due to external and some internal stimuli?
this has got to rank as one of the great questions layed on the human mind. i have to say (during my acid days, i mean....) this troubled me deeply. "is all i am just a heap of chemicals, reacting to the world around me, just a buildup of blocks". but after much thinking, i thought, perhaps all these chemicals and building blocks are just the physical means for the immaterial being to take shape. how does nature know the create things for that which has no material, who told the body to create serotonin, a chemical to make "us" feel good, what else does this chemical do but make the "mind" happy and comfortable. as if it knew it had to please this "something" inside. I'm sure its been said elsewhere that this whole existance around us is just a manafestation of a place or things that have no substance. i like that idea.
good question though, worthy of its own thread