This song reminds me of all the cheating in the "Great Gatsby." Tom and Myrtle are off together sometimes, while their spouses sit at home. Eventually Daisy does the same thing to Tom with Gatsby. The song is a lot like that in how it says that the husband is gone and the wife is suspicious.
It Had To Be You
This song is a lot like Gatsby's love for Daisy. She always makes him happy and he is always thinking about her, kind of like the song.Some of These Days
This song reminds me of the lonliness of Gatsby in the book. He doesn't really have many friends and all that many friends and he doesn't really "attend" his parties. Even at the end when the reader thinks he has friends he ends up with alomost no one at his funeral.