It is obviously to see that there is a big change of Charlie in the story.Remember at the beginning of the story, Charlie wanted his father's will really,but almost the all of his father's will was to offer a secrect person who is unknow.However,for the sake of his father's will,Charlie hardly to find the guy out and accidently knew her own's brother Ray.
He changed a lot when he met him,and finally he realized that what the love is,and it seemed to be a big real wealth.