Invisible

My friend, well actually my "so called friends", always make me feel like I'm invisible. What I'm saying is that I feel like they don't even know I'm there, they never try to talk to me or create a conversation. They look and even talk to me like I make no sense or that I'm stupid. So I either just leave and walk around inside the school alone, or just sit there and be quiet. It would be easier if they would just tell me they don't want me there, instead of just ignoring me.. Sometimes, I feel like I'm always just by myself, like I'm my only friend...