Gatsby and Nick are next door neighbors in Long Island and unlikely friends who are brought together by proximity and Gatsby's desire for Daisy.
Ironically, although he lives a modest home that is dwarfed by Gatsby's mansion, Nick comes from a higher social class than Gatsby. Nick is Daisy's cousin and Tom's college friend. He gains an instant acceptance into Tom's upper-crust "Nordic" world that Gatsby can never achieve. Nick is a member of the class Gatsby aspires to and which Gatsby finds represented in Daisy's in casual affluence.
When Gatsby discovers Nick knows and has access to Daisy, Nick becomes important to Gatsby. Gatsby treats him well from the start, and Nick responds to his charm, noting he had:
one of those rare smiles with a quality of eternal reassurance in it, that you may come across four or five times in life. It faced—or seemed to face—the whole external world for an instant, and then concentrated on YOU with an irresistible prejudice in your favor.
Nick knows he should...
(The entire section contains 2 answers and 700 words.)