How to know who hates you ?

How would you know if a person loves you truly or not ? The best way from what I think is look at their faces when something sad happens to you. If they are false friends, they would smile or chuckle and if they love you truly,they would be sad instantly. Please know the truth of the people, fake people are not only in facebook, they are in your life too. They are the people that waits to see you die, they are the people who can not stop laughing when you fall in trouble, they are the same people who would make jokes about you. Love from Jitu to you.