I relate to everything you are saying. I feel different, like no one understands me and my ideas. I'm not good at making friends either, and when I do I drop or avoid them completely when they do something I don't like.
I hate working in groups or being around people I don't know. However, I am incredibly lonely. I want close relationships, I just don't know how to obtain them and keep them.
The part about your zombie face is what I connect with the most. My family calls it my "permanent ***** face". Even if I'm happy or excited, everyone asks me what's wrong or why I'm mad. What I'm feeling on the inside is never communicated through my expressions, so people always think I'm mean or angry.