I disagree. If it is a friend you totally trust then at least you are not alone in knowing this. It breaks the ice. You share part of your burden. Maybe she cannot help you but listening and understanding and not judging are very powerful. Of course you have to be confident she will understand and not judge and not tell anyone. So I guess there are risks. We have to take some risks though in getting help. Maybe it will be easier to tell a counseler or your parents after you tell your friend.