Someone obsessed
Have you ever had someone that you make so mad and you didnt do anything at all to them and you dont even talk to them. The people who get all mad about everything you say and seem to literally be obsessed with you. And know everything about you. Like you say something at work and then that night on their facebook page they say "I cant stand when people say... this is why it's wrong".
This has happened a few times in life and on the internet. It actually amuses me at this point how I'm able to trigger someone so badly just by being myself and existing.