Backstory: Rather than spending date night in or at the movies I always like to go for a hike, walk or arcade.
The Idea: A social organization for couples to compete.
Deep Dive: Similar to recreational community organizations, you would create one catered to couples competition. You would keep track of scores for each couple and have them compete against other couples. You could have prizes and tournaments.
Validation: There are a lot of romantic and stereotypical date night services popping up but something different and active would attract a good crowd.
Monetization: You would charge per event, by providing awesome events you would get customers coming back for more.