I am diffrent?

Like a black sheep I am different to the others so therefore I am not allowed to be apart of what they call so called friendship?
Is it because I am different or because I threaten them by being different?
This doesn't make sense is it that they don't want me to be happy or because they are selfish and so insecure? I am not different for I am made up of the same particles as them only because I am different doesn't mean we aren't the same on the inside. It is what is on the inside that truly matters. For so long I have been told that due to the that I am different I cannot join in the fun and games, I cannot share secrets and have have friends all because I am different?