dateaversary

plural dateaversaries

1. informalThe anniversary of a couple’s first date; dating anniversary.

   Is your dateaversary the anniversary of your first date (like us hence, meetaversary), or the anniversary of the date you officially became a couple?

   2006 November 6, Bee “Mrs. Bee” Kim, “Meetaversary”, in Weddingbee, archived from the original on 23 Jan 2017

   2 more examples

   That Thursday night we went on our first date at a bar that only served beer microbrewed on the premises and had hundreds of bobble head dolls as decoration, which we thought were creepy and endearing at the same time. Lisa and I have gone back to this bar every year on our dateaversary.

   2013, Joshua Isard, “14 La La Love You”, in Conquistador of the Useless, →ISBN, page 58

   Tuesday marked the two-year anniversary of the Modern Family star’s first date with the Magic Mike XXL star, and she didn’t let the day slip by without some fanfare.

   2016 June 15, Suzy Byrne, “Sofia Vergara Gushes Over Joe Manganiello on Their 2-Year Dateaversary”, in Yahoo Celebrity