Love is....

What is love?. Can you tell what is love? Kapan lu bisa ngerasa that lu really falling in love and not just a fling? Can you make it sure? Can you predict that the guy or the gal was your true love? Is you can, what make you sure?
In my personal opinion, love is when you tried to protect your beloved from everything which are bad. Because your heart is bleeding when you see he/her hurt, eventhough the "hurt" was probably only a small knife cut. I think no matter what type of love is that (friendship love, family love or love between man and woman), love means protect and care. You will always want to protect and take care you loved ones.
I know this sound melankolis (or what ever you called it) after all I just learn about this after reading novels and watching movies, but isn't fiction was reflection of real life?