Love may be understood as a part of a survival instinct... a function to keep human beings together and facilitate continuation of the species... This emotion of the strong affection and personal attachment is beyond what we could see and what we could feel. I Love You is some sort of mantra that is so powerful and had essence of magic that has all the positive vibration. That warms ones heart and soul. That tightens one bonding with another. That enhances ones life. And it is made very easy to be expressed. Short and understandable by the entire universe. So why wasting time hating someone or why wasting time taking revenge? Life as we all know is very uncertain and we will never know what will happen on the next second. So let those you love feel your love at every single angle. Spread the joy of love. Say I love you instead of I hate you. Because life is too precious. Once its gone!! it's gone for good.