If it is serious. Be careful. Be cool headed. Study them. Find out about your legal rights and how to collect evidence of harrassment. Do it right.
This is happening to me right now and i do not know what to do. :/
Ignore the ignorance of the person. He is doing this to have people feel sorry for them.
Just ignore them. The people who really know you and are your true friends won't believe the lies anyway.
I don't. They are not worth worrying about. Of course you can confront them, and tell them you are much worse than they could ever imagine and it would be in their best interests to stop.
I have a revengeful stalker or should I say gossip girl that spreads rumors about me all of the time but I don't care. He's wasting his time with it while I am doing other things.