I think that the term of "best friend" has lost his real meaning in time. When you say "best friend" you should only think of one single person that`s most important to you besides your parents and your girlfriend/boyfriend. I can say I have a best friend, Maria who`s the same age as me. We share a lot of our secrets but not every one of them of course. Even though we do trust each other it`s impossible to tell even our most intimate secrets, I don`t think that`s even right. We have the same way of thinking about life, parents, and people and that`s great. The best thing about a best friend is that you can allways find a shoulder to cry on when you feel sad.