We smile at whom we like,
We cry for whom we care,
We laugh with whom we enjoy &
We become angry with whom we feel is our own...

Never leave a best friend if he/she hurts you the most at some point of time. Try to understand him/her, talk to him/her and do what ever you could. But never leave them. Those are the people who love us the most. In fact anger is an outcome of excess love. And for the sake of this anger (in fact the love), i lost one of my best friends. Hope he/she could understand my love for him/her in future and come back to me.