At my place, it had become a habit for Kana's married friends to visit every weekend. We got along so well that we even talked about living together someday. Then they mentioned moving in next door next month. The rent was nearly double what I currently paid, so my wife was looking forward to seeing the house. But when I offered to let them stay at my place, she seemed to look down on me, which made me furious. I snapped and told her, "You go alone." As a result, we ended up participating in that couple-swapping experiment that had been trending on TV. At the time, I never imagined I'd experience such a nightmare.