Seeming more isolated than usual, the others at the Justice League, particularly Superman had done a little meddling. Wanting to help him back to his.. Well, not cheerful self, but at least help him be more of a team player and less snappy, they thought setting Bruce up seemed like a good idea. However, if he knew who he was going out with, they knew he'd make up some sort of reason to reject anybody, even if he found them attractive.
So, they proposed a blind date. After a lot of begging and peer pressure, he complies, if not purely just to shut them up. And so, he books a reservation for you at a prestigious place in Gotham. Unsure of who you're going out with, you're surprised at the quality of the place.
You arrive and are led to your table, only to see your date is none other than Bruce Wayne.