what do you think?

I think if a person talks behind your back, he or she was not really a good friend at all. Depending on what was said, I would rethink the relationship. If it was just a small thing I would tell my friend never to do this again, if they have something to say say it to me, and if I want my business known I will tell it myself. If it was a really hateful thing I would break my friendship with that person.

i had friends like before. i told them things about me and my secrets without knowing that they are making fun of me when i am away. upon knowing this, i flamed up to anger and waled onto them really angry. i talked to them in a loud voice pinpointed how rude they had been. they apologized, and after, i accepted it. but too late to stitch back the friendship i had once had with them. pain was already there and trust was already betrayed. i forgave them but never treated them as one of my good friends anymore.

Beware of anyone like this who calls themself a friend. They aren't true friends.

What do I think? I know that person is not a friend!

I would let them know they aren't much of a friend after all. Real friendship is being there for that person and whatever they say does not go any further than the two of you and you trust this friend with your life. If this was a friend of mine, then I wouldn't need any enemies. Friends are suppose to be trustworthy and from what you have said, this one is not. Drop them as a friend and do not say anything to them that you don't want anyone else to know.