What is the importance of the Gentleman's Closet in the novel, We’re All Damaged?

The Gentleman’s Closet is the tailor where Andy goes to get his suit for his grandfather’s funeral. It has been in Neal’s family for several generations. When Andy goes back to the shop to get his suit, he shares a scotch with Jerry, who lets Andy know that what happened between he and Karen may have been fated from the beginning, and nothing Andy could have done would have changed it.