I made a blunder during a presentation on a business trip, and ended up returning home earlier than planned. I arrived home groggily, not having the energy to contact my wife. That's when I felt something strange. Because the front door was unlocked. And there were shoes belonging to a man I didn't know. I had a bad feeling. I heard my wife's obscene moans from the back of the room, and my premonition turned into certainty.