I long to be around ppl. but when i am i wish i was alone. it seems like they act like in not there though i try to join in. causes of this?

Get guidance: There are ways to learn to interact successfully with people. Find a wise guide who'll focus on behavior and learning skills rather than "talking about feelings". The dale carnegie books are still great. Few people really enjoy "social events"; you have a duty to yourself to find some activity you enjoy that will bring you into contact with people who share your interests. Be brave.