Stalking

Stalking is when a person is obsessed with you and cant stop harassing you. This sort of stalking can happen to you if someone is following you around, or is texting, ringing or sending you letters constantly, then this is a sign of unwanted attention. There are many causes which cause stalking behaviour, such as:
Many stalkers have psychological problems and may not be able to form relationships in a normal way. They may be a ex - partner and cant accept the fact that the relationship is over
Some stalkers may convince themselves that they have a relationship with their victim
Many stalkers may be motivated to get revenge
Stalkers are usually people who you have dated or been in a relationship with and just cant get no for an answer. I personally believe that stalkers are frightening and that it is terrifying for someone to stalk or harass you in anyway, the best thing would be to notify the police if you are being stalked.

www.met.police.uk/stalking/advice.htm