I think it's generally about not being very social. Sort of not always wanting to walk in a room full of people and talk just 'cuz. He doesn't feel like he fits in with most people so that is why he doesn't feel comfortable walking in crowded rooms.
"I have my doubts of where I belong" he doesn't know exactly who can understand him and in which group of people he 'belongs' to.
Also, the part about "In that room I see her, I see her and she's with him" this is just an added detail of how the girl he likes is with another guy, and he just sits back and walks away wishing she wasn't with him. This just adds to his alienation, even the girl he loves doesn't want him.
He feels that no where he goes, he will be accepted or understood. "Disappearing Boy" is just a funny way of saying that he won't be caught seen with anyone anymore because he knows he doesn't really belong.
Very similar to "I want to be Alone" in this sense.
I think it's generally about not being very social. Sort of not always wanting to walk in a room full of people and talk just 'cuz. He doesn't feel like he fits in with most people so that is why he doesn't feel comfortable walking in crowded rooms.
"I have my doubts of where I belong" he doesn't know exactly who can understand him and in which group of people he 'belongs' to.
Also, the part about "In that room I see her, I see her and she's with him" this is just an added detail of how the girl he likes is with another guy, and he just sits back and walks away wishing she wasn't with him. This just adds to his alienation, even the girl he loves doesn't want him.
He feels that no where he goes, he will be accepted or understood. "Disappearing Boy" is just a funny way of saying that he won't be caught seen with anyone anymore because he knows he doesn't really belong.
Very similar to "I want to be Alone" in this sense.