When she came over and he saw her again after five years, he realized that Daisy wasn't as "wonderful" as he had pictured her.
Nick Carraway even says, "There must have been moments even that afternoon when Daisy tumbled short of his dreams---not through her own fault, but because of the colossal vitality of his illusion," (Fitzgerald, 101).
He "came over" to Nick's house, and got a chance to be with Daisy again.
He also arranged for fresh flowers to be brought in to the house and even hired someone to cut Nick's lawn.
In the end, Daisy ends up using Gatsby to escape trouble.
She can't handle the fact that she killed Myrtle Wilson in a car accident, and Gatsby is willing to take responsibility for it. Gatsby has no chance to achieve his dream because he lived during the Modern Age.
He also couldn't be in a relationship with Daisy because he didn't belong to the upper class.
Gatsby's dream is often viewed as the "American Dream," and was very common among people during the Modern Age.
Daisy was always someone special in Gatsby's eyes because of her status.
In an attempt to win Daisy, Gatsby got his neighbor Nick to invite her over to his house.