Extreme heartbreak

I don't even know how to start these things. About 2 years ago me and my friend got really close, and i fell head over heels for him. Not the puppy love, the kind that you'd do anything if you knew it would make them happy. he used to always talk about how much he wanted me around and he wanted to take care of me. He was the only person that ever made me feel like I was wanted and that I was someone special. so he gets this girlfriend. I tryed to tell him and nudge him away from her. I failed. I got sick and had to move away to my moms because I couldn't afford to go to the hospital there. I had my gallbladder removed at my moms after a couple months. So I'm at a friends house and we'd been drinking, and his girlfriend posts on facebook that they got engaged. I told her how I felt about about her and then I told him how I really felt about him. The only thing he told me was "we'd never work out" and he's not talked to me since. and it hurts. It's been over 2 years and to this day Iv'e not dated nor even been interested in anyone else. I just don't know what to do. Even now if he happened to decide to talk to me i'd do anything he asked. I don't know how to get over it. I'm so tired of being alone and not letting one in. I feel pathetic.