That was on you, fella
This couple on a lunch date seemed to be getting on famously at first. They were talking and laughing, and even asked the staff to snap a few pictures of them. Nobody could have guessed that their delightful lunch date would turn into a fiasco.
By the time the check arrived, the girl was out of sight. The guy, for some strange reason, decided to give the OP, who was waiting on his table, a piece of advice: if you want to break up with someone, do so at McDonald’s and not a fancy restaurant. Not to be rude, fella, but that’s on you. Also, nobody should take advice from someone who misleads their date throughout the first half of lunch.