what clues are there that reality cannot satisfy gatsbys dream

Nick describes a moment between the Gatsby and Daisy where they both seem to be completely happy and lost in the moment. He also sees that the real Daisy can't live up to the "status" she's been given in Gatsby memory. Nick knows that Daisy will never be the woman Gatsby has wanted all the years because he's made he so big and so perfect in his mind. The passion and love of the dream will not long extend itself to the reality.