Always in my own world

Yeah. As you can see from my post title, it's just like how i feel inside each time when i'm just like a left out, an extra. It feels as if i don't belong with them. It's like, i don't know how to communicate with friends when i don't feel hyper. Maybe, i'm still the primary school me, not changed at all. The timid me, the quiet me, the left out me. I don't know how to console people, but often end up crying with them. Sounds childish, heh? I really wonder why people enter and leave one so easily. A moment, he or she sticks with you, but a moment later? They will be with another group of friends, captured within own's laughters and never notice your existence at all. Maybe, once or twice, they will talk to you, but eventually walk away from you, as if they have done using you.