Why do some people try to stalk others?

Anonymous
I have a friend who is like a good friend when but I find many of his behavior like stalking. He is having a girlfriend but many times I find him following me, or trying to sneek or hear my conversations. He tries to be touchy at times and I have recently found that many of our co friends are actually giving all my information to him. He doesn't make it obvous but manages to get my details. Why can't he mind his own business and let me be on my own. When I try to ignore him he purposly try to seek my attention. He is also my boss so it is difficult for me to really get away from him totally. What is the reason of some people trying to interfere in others personal matters or stalk others...why do they do this.
Why do some people try to stalk others?
4 Opinion