Is it wrong?

I have a pair of neighbors that have smiled while facing us but, as soon as, they are behind us they talk about our family and are really quite cruel. Our other neighbors have told us of their nastiness but, they don't know we know about them. I know this is drama....but I feel like I should tell them, "we know what you have tried to do to us".

I feel guilty having them stand before me and act as though nothing is wrong. We don't harbor any ill will towards them but, I would be embarrassed if it was me and I am embarrassed for them. If you can't say something directly to someone, don't say it at all.

So we know what you did and what you said, while you stand there and try to pretend we are great friends....lol :)~~~~~