Mark and Adriana met in a dark dive bar in Boston. It was Adriana's birthday party disguised as a Bachelorette party. Mark showed up to be Adriana's best birthday present...to date! :-)
Mark made a video game for Adriana to play, in which she must save him from the clutches of "Hordak the Hoodrat" so they can be together forever; all the while streaming it live on twitch for the world to watch. See the proposal video here: https://youtu.be/Jw4F2mlfb9k