Friend--- What I should have to become your best friend?

To become a friend of a person is so easy. But to become a best friend is very big task. You not need to be have the same character as your friend, you just need to be understand the differences between you and your friend. Yes, caring,sharing,etc. are all needed to understand them. You need not to be similar thoughts as me, i need to have lot of interaction with various topics. I don't want to have my friend telling me, i agree with you every time. I just want to express his true feelings to me. I can tell more about friendship, as it is endless. If i write here, it would be a page of having 1MB size..LOL... Have a great day