If you consider him/her to be a friend then why do you bash them to others? In front of their face you carry the biggest smile but the moment their back is to you, you point out every flaw to anyone who will listen. You join in on conversations bashing them. You agree with the insults. Then you act like nothing happened once you are in their face again. Like, what exactly is your definition of a “friend” because I think mine is a bit different. I mean, if they are that bad maybe you should just consider removing them from your life… But then again who would you have to talk about?