This is such a scary thread. gonk
When I was in high school, I dated this guy for a few weeks, nothing serious, and then he told me he didn't want a relationship after all, which was fine by me; dude was physically very aggressive. After that, my friend and I started getting calls every night between 1 and 5 am. Sometimes it would be a fake charity asking for me (or my friend, in her case) by full name, sometimes it'd be a big group of people yelling for me to come outside...this went on for months, every night. After about a month of this, I started getting the calls when I was home alone during the day. He would call the second I opened the door to my house, or the moment my parents' car left the driveway. Sometimes the front door would shake like someone was trying to open it, and then I could hear someone walking around to the back of my house and looking in the windows. Fricking scary, man. The calls eventually got more sporadic, and eventually I'd only get two a month. They finally ended completely about a year ago, thank the gods.
This one isn't necessarily stalking, but it's still weird. I had been talking to someone on a different site's forum as we had the same taste in books, and it turned out his best friend was someone I used to talk to until he got creepy (he'd send me huuuuge emails every night about how perfect I was). This guy constantly tried to talk about his friend with me, talk about how awesome he was, stuff like that. I was uncomfortable and told him that, but he wouldn't stop. He would send me messages constantly, he would harass me if I didn't respond, and then he'd send me emails. Eventually I reached my threshold of annoyance and just cut off all contact with him. This was a few months ago and he still emails me sometimes, begging me to talk to him again and saying he bought me a game (???). I'm glad I've never had these occasions get physical.