calvin is popular,athletic,and well-liked by everybody. explain why he felt so alone and isolated before meeting the murry's

Calvin says he felt alone and isolated because he'd never had anyone to talk to before meeting the Murrays.

"For all the most unimportant reasons," Calvin said. 'There hasn't been anybody, anybody in the world I could talk to. Sure, I can function on the same level as everybody else, lean hold myself down, but it isn't me."