person A: Some one lied to my girl friend
person B: I hope it wasn't a close friend that lied.
person A: He was a friend
person B: That is sad.  Liars and thieves are just the worst.
person A: I don't want to keep such friends 
person B: I don't blame you.  A friend like that isn't a friend at all.  I'm sorry that has happened to you.