Nancy AKA Mark Allen
Here’s another occurrence of a couple at a sporting event where the wife is caught cheating on her husband directly in front of him by the person sitting behind her. It looks like the wife thought that by changing the name of Mark Allen on her phone, her husband would never know she was cheating on him.
All cheaters get caught, eventually. This one just so happened to be from a stranger. It looks like this wife was in the wrong place at the wrong time. If she’d been sitting a few seats over, she probably would’ve gotten away with it (via Traveler Dreams).