Am I weird???????????????

I was friends with this guy for years. We work together. I fell in love with him. He claimed to feel love for me, but wouldnt commit. OUr friendship suffered cause I was literally too scared to be around him, it hurt too much. I never told him why I withdrew and he just took it that I was ashamed of him or snooty. Things got worse. We work together. Today though sparks my question. I wont see him for a week. I went into work to park my car. I didnt call in to say hello to him. Before, when we were friends, I would have gone in and chatted to him . Today I couldnt. Am I weird? Is it any reason that he thinks I am a *****. What is wrong with me? How does he see this? This guy believes in showing how you feel while I am very private and shy. And would he think I was a nutcase, now at this stage, to go about telling him why I always ran away from him the closer he came and acted like I didnt care and didnt go into him today? The really sad thing is he still likes me and wants to be friendly I think.