I had my own awkward situation. This happened several years ago when I was strolling with family in an amusement park, then the kids decided they want to buy some
shawarma, so we proceed to the stall to order, lo and behold, the girl standing at the back of the cashier was my regular (at a now defunct massage parlor - Emerald). I later found out that her brother is the owner of the food stand. Luckily, she noticed that I'm with my wife and kids, so she just smiled and gave me a wink when she saw that their attention were on the food. Needless to say, I visited her the following day....