Gatsby's Crazy Love

Gatsby has always believed that "people can go back to the past". After he got the love of Daisy, he insisted Daisy to tell Tom: "Tell him, you never loved him." Gatsby disagreed with the five years of Daisy's past, denying the current Daisy and denying her experience in the past five years. This may be one of the reasons why he can't get Daisy back.