A clip of the moment finds Kunis, 30, shyly covering her face after realizing she and Kutcher are on the screen. Kutcher, on the other hand, playfully took his cap out of the way and kissed his fiancee.
The Two and Half Men star and Kunis met on the set of the 1990s sitcom That 70's Show, and re-connected years later after Kutcher divorced from his wife of eight years, Demi Moore.
You can check out a clip of the pair's "Kiss Cam" embrace below.
Celebrity Breakups and divorces of 2014 [PHOTOS]