The reality of the other person lies not in what he reveals to you but in what he cannot reveal to you. Therefore, if you would understand him, listen not to what he says but rather to what he does not say.
Friendship is like a string, when it breaks, it may be tied again but a knot comes there at the joint. So be careful about your friends and never try to break your friendship because it may be made again but there will be bad impression of break is left in the string of Friendship