My friend invited me to this fancy steakhouse. I told her I couldn’t drop $200 on food, so I’d go light. There, she ordered a giant steak with three sides. Me? A salad. Only. The waiter came with the bill. She told him, “Oh, we’ll just split it.” I nodded. What she didn’t know: I’d secretly excused myself to the restroom twenty minutes earlier, intercepted our waiter near the kitchen doors, and paid for my single house salad and tap water in full. I had even added a generous twenty percent tip on my twenty-two-dollar total, completely closing out my portion of the evening’s festivities in crisp cash. The black, leather-bound checkbook currently resting on the pristine white tablecloth didn’t contain our combined total. It contained hers, and hers alone.