This section of the novel comes in Chapter 5, when Nick organises a meeting between Gatsby and Daisy finally. Gatsby is completely tense and preoccupied with this much-longed for meeting, and Nick, when he has met Daisy and taken her inside, is much surprised to find the living room empty. Then Nick hears a "dignified" knock at the door. He moves to open it, and describes Gatsby as follows:
Gatsby, pale as death, with his hands plunged like weights in his coat pockets, was standing in a puddle of water glaring tragically into my eyes.
Thus Nick describes him as being incredibly pale and overwrought, suffering with the intense anticipation of meeting Daisy once more and the tantalising chance of gaining her once again as his woman.