Yeah, if he is the snitch, just defriend him, but I know what you mean about mother's also. Mine will have an opinion about something I did or my sister did, then tell us that the other one made a negative comment about it. We've now learned to not believe mom and let it slide with each other because we used to get into arguments about it with each other. Mom's always been this way and there is no changing her so now we just choose to call each other first before getting angry.