Continuity mistake: Before this episode, Vint and Naomi were married already and in this episode they are not. They are not even a couple.
Suggested correction: A similar mistake like this was already corrected. The episodes were aired out of order, so there is no continuity mistake on part of the show. "Alien Marriage" was the 2nd episode produced. The show started with the 4th episode produced and season 1 ends with the 1st episode produced. Many refer to these types of episodes as flashback episodes.