A stalker is someone who follows and terrorise his big love even though the loved one doesn't want anything from the stalker. Sometimes the stalked person is a celebrity but it also happens to "normal" people. For example a partner quit the partnership and the other one can't accept it. He follows his lost love everywhere, calls him and stuff. Sometimes stalkers can become very dangerous. They are ill and need psychological help.

Iceland's singer Bjork for example got a letter bomb once from a stalker when she got engaged to someone else. The stalker didn't want anybody else to be her love than himself. Cher once had to hire a bodyguard who took care of her 24/7 because of a stalker.