How does one do the right thing by a potential stalker/obscessor to get them to leave you alone forever?

Asked by missjena (918) January 22nd, 2009 from iPhone

I was dating this nice guy for just barely 3 months not even. I always new there was something off about him and now I’m sure. He won’t accept we are now just friends. He is odd in general. Then someone recently broke into my myspace account and messages a friend of mine, mike , pretendiing they were me implying we had sex! It had to b this guy. I asked him because I had some evidence against him and he denied. Either way he was acting strange and was scaring me. I tried to be nice and end it but today I really had to tell him scream it into his head basically I just want to b friends. He’s weird. I’m gonna just ignore him but I want him to stay away from me. He’s creepy. Should I be real worried about this guy? Will he eventually get the point and leave me alone? What do I do?!