I am not sure if you mean fake as friends that you don't know offline(online friends) or fake as in people who only pretended to be your friend and then stabbed you in the back.
Either way, I disagree with whoever said it doesn't hurt. It does. I have felt both the loss of an online friend(she was from Russia and I think something bad happened to her) and I have also been betrayed by someone who I thought was my friend and turned out not to be anything of the sort. I know how bad it can hurt, but it can help talking to other friends(or just writing it out for yourself in a journal or something like that).
My PM Box is open if you ever need to talk.
