It's bad to tell others' secrets.
Sandra knows an interesting secret about her brother, and she sees her friend.
Sandra wants to tell her friend something interesting.
Sandra tells her friend about something interesting that happened to her over the weekend instead of the secret she knows.
Sandra tells her friend the secret about her brother although he asked her not to tell anybody.
Sandra's brother is happy that his secret is safe and that he can trust his sister.
Sandra's brother is very embarrassed when he finds out that someone knows his secret.