Five ways to: Deal with back-biting Friends?

Be the better person: If they were "back biting" you, it was an attempt to elevate themselves socially. They wanted to look and feel better than you. It must also mean that they felt you were better than them. Don't fall into the trap of doing the same to them in future. If you are able to forgive them and understand that they are not perfect, you are more likely to forgive yourself and realize that you are not perfect either. Or maybe they were also irritated my your attitude/action in the past which probably provoked them to take such steps or react. The best possible thing is to forgive them. Easier said, forgiving enemies is easier than forgiving a friend who back stabbed.