My wife went back to her parents' house to give birth. I was letting loose since it had been a while since I had been living alone. Whether she knew about it or not, my wife's younger sister came to our house. "Brother-in-law... aren't you trying to cheat on me?" I couldn't hide my shock as my sister got straight to the point... and then she said, "I'll take care of it for you so that you don't cheat on me..."