Best Friend - someone with whom one shares the strongest possible kind of friendship. Your best friend should be somebody that you can trust one hundred percent. You should be able to confide in them knowing that they will not spread your news to other people.
How many times have you told a friend a piece of personal information and asked them not to tell anybody else about it? The sheer fact that you had to ask them not to tell other people should tell you that they are not best friend material. All of us have stages in our life when we really need a friend. We may be in trouble, we may have done a terrible deed. What we require in this situation is somebody to support us, listen to our problems, offer advice, possibly a room to spend the night, but most of all not to judge us. We all make mistakes; after all, we are all human. A best friend will offer all of these things without hesitation. We all need somebody to be able to phone from time to time, just for a chat, somebody who will make us laugh and ultimately happy. We all need to have the odd night out, perhaps at the cinema, perhaps to go for a drink or perhaps to go to the theatre. A best friend will be the person to call and will make time for us in these situations. A best friend will not stab you in the back by attempting to steal your boy/girlfriend. They will not spread rumours about you. You should be able to trust them with your life.