Everytime i think i'm over him i fall right back in love the next time i see him!..help?

I grew up in a very small town in NJ. I met this guy when i was 10, we went to the same school, hung out with the same kids, we practically grew up together. I pretty much fell for him the first time i saw him. Even at age 10 i knew it wasnt just a crush..it was so much more! He never had the same feelings i did, but i could never shake them, no matter how hard i tried. We were always friends, but when i told him how i felt he backed away from me. It hurt like hell. It's been 16yrs since we first met and although we dont hang out anymore, living in a small town we see each other alot. I try to forget him and feel like i'm doing well..until i see him again and i fall right back in love with him. He's everything i've ever wanted in a man, he's the only man i've ever loved. He has no doubt ruined my life. I know its not his fault but he really did hurt me. What is wrong with me? How am i ever going to get over him?