I am so so sad, how Do I move on from a someone who doesnt want me back?

I was seeing this guy i worked with for a few months and, he broke it off with me back in November 09 he told me flat out, hes not looking to date, just an intimate relationship, so I said adios, so I changed my cell number, and he got it again somehow, and was prank calling my phone,calling my job, sending mail and stuff to my house with his last name so I called him a few times, and he asked me to come over his house and sleep with him, I made up an excuse and never went to his house, so he still continued to play games on my phone, plus on my house phone, so I went to his apartment to try and talk to him, he tells me to leave and never come to his house, i see his baby mother and I try and talk to her in a very calm collected voice, she just tells me "I dont have nothing to talk to you about" and just starts yelling..I'm like wow why is she yelling, so come to find out she lives exactly downstairs from his apartment, and when i looked on the aparment phone directory, his name is under the apartment she stayed is in his name, so I aks her if they live together she tells me you need to ask him...so i leave and hes like I'm about to call the police, so an hour later hes prank calling my phone, i change my number again, and again he gets my cell number and is prank calling my phone again, so i endup calling him, and hes like "Why are you calling my phone" you crosssed the line coming over to my house and disrespecting him and causing a scene and I dont have anything to do with you" so I apologize and hes ignoring me and ignoring me, and two days later he calls me five times in the middle of the night I was sleep so i text him and text him hes ignoring me for the past three months, I try and call him email him he just ignores me,so I dont know what to do?I have feelings for him and I cant move on? ...PlusI dint know if I'm going crazy but every time I 'm going to an event at least two of his close friends attend, and I mean every single event, and we did not grow up together , or shared any mutual friends.so I just thought that was weird,hes callling me dumb and stupid on the sly on these fake pages, he has also created 'fake" facebook pages and added every single one of my friends/family members,...and the weird thing about it is that i have created a fake facebook profle and communicated with these "fake" facebook profiles and hes dropping hints that its him behind the profiles, telling me he cares about me on the fake pages,but when I try and talk to him personally he ignores me, its like i cant let go,can anyone help me please,I am so confused and sad at the same time..