Jake McDorman (Evan Chambers) and Johanna Braddy (Jordan Reed) also worked together on episode 4.2, My Oldest Daughter (2014), of Shameless (2011) as Mike Pratt & Shelley respectively.
When Cappie was reading a book at Doblers and Casey spoiled the ending for him the book's title is not really visible but based on the plot description it is "The Sun Also Rises" Ernest Hemingway.