My wife was away on a trip with a friend. I had been feeling a bit down, so I decided to call a delivery health girl to my house. I gave her the address, and it was my wife's mother who showed up! In the awkward atmosphere between us, my mother-in-law unexpectedly invited me to join her, saying that it would be a waste of time to just let her have sex. We were just a customer and a delivery health girl. With that in mind, the two of us shared a kiss...