what is Love?

the other day while sitting on the subway, i looked outside for a moment and saw a couple standing and looking at each other. they were probably saying goodbye for the day before departing to their daily journey. i was watching them as if i was watching a scene from a movie.
after they kissed & held each others' hands, they turned around to go about their ways.
first, the woman turned around and saw her loved one, but the man didn't turned around and kept walking. so the woman turned back and started walking, but that's when the man turned around to see her, and he stopped and watched her walking, and in that moment she turned around to see him once more. so they finally saw each other and waved hands at each other and walked away with a smile on their faces.

i think it happened like in a fracton of a second, but i was able to catch that moment.
just watching them being madly in love with each other gave me a smile on my face.
and it made me think about what love does to us in our lives.

and i can't help but wonder.
what is love that keep us going, and feeling stuck in the past simultaneously?
what is love that makes us feel so alive, and lifeless at the same time?

during the past week, i had conversations with people who are in love in their own ways even though some of their feelings might be a little premature to call it love, but i wondered what love does to people in life.

a friend said that she has a crush on someone and can't help herself but acting idiot around him.
a friend said that she finally confessed to someone whom she has been having a crush for a while, and was worried that she might have ruined their dear friendship.
a friend said that he can't think of loving someone else than his ex-girlfriend, and got so emotional when he smelled some lady wearing the same perfume as his ex.
a friend said that she had a great connection with someone in a very short period of time, and even knowing that he is in love with someone else, she longs for his love.

to be honest, i had been in all the above situations myself. and haven't been a specialist in this area, i still don't know how, and why the love does what it does to people.

once i read an article that love functons like a drug in our brain or its impact is even greater to the human brains than the influence of drugs. and it takes only 4 seconds to feel that people like someone and takes 8 seconds to fall in love with someone. it can happen because the brain receives the influences of love which helps people to recognize and it connects to the human emtions. although the results of this research might apply differently to various people. not only the human emotions, but the science proves that there is a connection between the functions of love and the human brain.

feeling crazy, jealousy, hatred, pain, suffering, longing, joy, happiness... all these emotional feelings can be created through how the brain and the human mind interact with the ramifications or impact of LOVE.

and how does it interact? does it make us stronger that we feel like can do anything and nothing's impossible? or does it make us weaker that we feel more dependable and can't control our emotions? does it ever lose over our own thoughts or will or does it always win over human emotions?

the answer is, i do not know for i am also one of its victims.