Friendship is built on trust. I think the worst thing that one friend can do to another is secret betrayal. If my best friend told someone else my secret, I’d be very angry and disappointed. After that, our friendship would end instantly, and I wouldn’t trust anyone easily in the future. In Katherine Paterson’s Bridge to Terabithia, a girl lived with a violent father, her father usually hit her. That was her biggest secret, and she only told two friends. The next day she went to school, everyone knew about that secret because her friends had betrayed her and didn’t keep the secret. The girl felt really sad, her friends hurt her deeply. That was a nightmare. Fortunately, I didn’t experience this kind of tragedy. From now on, I wouldn’t trust anyone so easily. If I wanted to share my secrets, I would only tell my best friend who was trustable. Also, if my friend shared a secret with me, I would be the last man to betray my friend.