Some time back went to a leading restaurant in a leading city, where does not matter. It was on a Monday night when BYOB was encouraged not just permitted. Had brought too much beverage for the two of us as l generally do. Saw a gentleman eating by himself and had the waiter give him a glass of my superb and very old vintage port to make the experience more enjoyable for him, or so l thought. When we got our check sometime later we found he had paid for our dessert course which was a great surprise. We had had eye contact and then he came to the table to thank us very graciously for the wine and discussed the year and other tasting notes, we knew nothing about the dessert payment until we left. l thought this was very generous of him and considered the experience a great one. After talking to my GF about this she had an entirely different read. She felt that we put him in the uncomfortable position of forced reciprocity and l do not know which of us is correct, please weigh in and let me know who read the situation better.