They were cousins.
Nick Knows Daisy and Tom because Nick is Daisy cousin while Tom is her Husband
Jordan Baker plays the piano when Gatsby, Nick, and Daisy are in Tom and Daisy's house.
Nick invited his cousin Daisy to his house for tea, so Gatsby can meet Daisy again. Gatsby has always wanted to meet Daisy since he left Daisy for world war I
Daisy compares Nick to a rose, implying that he is refined and elegant.
Nick knows Tom and Daisy in the Great Gatsby because Nick is Daisy's cousin.
Nick knew Daisy because she was his cousin.
Daisy Buchanan is Nick Carraway's cousin. Nick serves as the narrator of "The Great Gatsby" and becomes involved in Daisy's complicated relationship with Jay Gatsby. Their relationship is a mix of family ties, friendship, and the complexities of the interactions in the novel.
Nick's second cousin is Daisy who is married to Tom, used to date Gatsby who Nick lives next door to. Daisy and Tom are friends with Jordan who attends Gatsby's parties. Tom is having an affair with Myrtle who is married to Mr Wilson who kills Gatsby at the end because he ran over his wife but it was really Daisy.
Gatsby understands the seductive power of Daisy's voice, which Nick may not fully comprehend. Gatsby associates Daisy's voice with his idealized vision of her, while Nick sees it more objectively. Gatsby's obsession with Daisy's voice reflects his intense longing for her, which Nick may not share.
As soon as Gatsby discoveres that Nick knows Daisy, he becaomes friends with him in order to get closer to Daisy. His whole relationship with Nick is false, because he is only "friends" with him to get to Daisy.
They are cousins
Nick advises Gatsby not to try to repeat the past with Daisy, as he cannot recreate what they had before. He also warns Gatsby about the dangers of pursuing an idealized version of Daisy that may not exist. Ultimately, Nick encourages Gatsby to let go of his obsession with Daisy and move on.