Dating Forum - What Do I Do With Him (please Help)

I've know these guy for about fours. I meant him in high school my 12th grade year. Really didn't see him as anything but an friend. Plus he had an girlfriend. Well are second semister I had an history class with him. He would come sit behind me , ask me to the movies, ask me questions about guys, give me his number,get mad if I didn't call or wouldn't, hang out with him, tell me he told his family about me, sit with me at lunch,gave me money, take me home, come up to my job. And people started asking me we,re we talking. ( mind you he had a girlfriend) and everytime I corrected the people saying we're just friends. And then tell him about it he wouldn't say anything. So after high school we still we're cool talked on the phone for four hours, went places, just cool. And I began to like him and it was more mentally then physically. But he was still seeing his girl. But she was away at college. He would always tell me he wasn't, happy. So when they broke up I told him I liked him. He said he liked me too. And we started talking more and our conversation changed from just general topics to relationship topics. Even one day when he called me while he was with his boys I heard one say something about us talk. He bought me a great b-day gift , and was talking about what he was going to give me for christmas. Anyways around thanksgiving his ex got out of school and came down for the holidays. My intuition said it was going to be some stuff, I had talked to him earlier, when my sister and I we're heading to store. Anyways I went to the store later then I said and I saw him pulling up I parked and watched him get out. And quess who he was with him ex and i'm not trippin like it was innocence they we're holding hands. I was shocked I never thought I would see this . I waiting and called my friend on my cell so she could claim me down. Went in their to look for him to see how he would react to seeing me. When I saw him he wasn't with her they we're split up he looked at me and smiled with his hands out for an hug. I walked passed him an he said oh is it like that I just kept walking. Well he and her leave without buying anything, but their were not even out of the store and he's calling me on my cell. Asking me whats wrong, and I keep hanging up, he keeps calling back saiding talk to me ,it ain't like that ,(mind you she's in the car while his beggin to me) he called about 15 times. I gave him his gift back that he bought me , he gave it back to me , with notes, he kept write me letter asking me why I was ending our friendship, so after 5 or 6 letter I decided to be back friends and then I hear he asked my guy friend were him and I messin around, and my friends no , and he say well I think ya'll is. So I end the friendship for good I thought. He got back with his ex and I started messin with some one. And you would think it was done . But it's not he's always asking my friends about me , calling my house blocked, has his friends stared at me or speak, when he sees me in public he tries to come up to me. Has mutual friends give him info on me. We talk on and off we we're friends once in 02 for 1 or 2 mos and then didn't really talk anymore. Until 04 and when we did he was trying to be deep saying he usually does open up, he didn't have want he wants(he kept saying that) . We are o.O.K.. Right now but he's acting weird if I call an tell him to call me he won't and if he doesn't it's blocked and he doesn't, say anything. He's only called me maybe three or four times outta the 7 mos. I like him still, but I don't now if I should. Please help. Rolling Eyes