This is the 100th episode of the series.
Leslie and April are both wearing France themed shirts. Leslie's has Eiffel Towers on it, and April's has colorful macaroons. This could be a nod to the previous episode, Second Chunce (2014), where Ben and Leslie went to Paris.
The ring store Ann and Chris go to is called "The Fellowshop of the Ring" a parody name referencing "The Lord of the Rings: The Fellowship of the Ring"
In the jewelry store Ann and Chris discuss watching Grey's Anatomy (2005). Rob Lowe (who plays Chris) was strongly considered for the role of Dr. Derek Shepherd (played by Patrick Dempsey ) in Grey's Anatomy.
Will McLaughlin (Officer Killnose) and Adam Scott (Ben Wyatt) also worked together on The Good Place (2016) episode, What's My Motivation (2017), as Officer Prawnmandler & Trevor respectively. Both shows were created by Michael Schur.