As the answer above indicates, Nick knew Tom when they were in college together at Yale, and he identifies Daisy as his second cousin, once removed. Shortly after the war (World War I), he says, he had spent two days with them in Chicago. While Nick both explains that he.
Daisy and Tom initially invite Nick over to their home as a nice gesture and an opportunity to introduce him to Jordan Baker, who is a professional golfer and attractive single woman. Daisy is friends with Jordan Baker and plans on hooking her up with Nick, and Tom views Nick’s visit as an opportunity to brag about his estate.
It is there, in the spring of 1922, that Nick becomes reacquainted with both Tom and Daisy.
By the end of the evening Nick has learned that Tom is an unfaithful husband and has also been physically rough with Daisy. Nick and Tom know each other from their days together in university.
They invite him because he is family, he is single, they have a single female at the house and the “custom” was to “fix up” the single woman with an appropriate man. Tom is intent on having a bragging session with Nick present.
How is Nick acquainted with Daisy Buchanan?
Upon arriving in New York, Nick is not acquainted with anyone and only knows his second cousin once removed, Daisy, and her husband, Tom Buchanan, who live in the aristocratic East Egg.
Later on, it is revealed that Daisy used to have a relationship with Nick’s enigmatic neighbor, Jay Gatsby, and Nick serves as the intermediary between the both of them. Nick is Daisy’s second cousin and Nick had known Tom in college. Daisy lived in Louisville, the same town Nick was from until she married Tom and they moved to the East coast.
How does Tom feel about Gatsby in Chapter 1?
Tom, on the other hand, looks through lower caste (to his mind) people like Gatsby as if they don’t exist. Further, chapter one makes it clear that Tom and Daisy are informed about what is going on in Nick’s life, insisting they have heard he is engaged.