When I joked that watching Linda load her daughter's panties into the laundry was the most action I'd had in a long time, she laughed and started holding each one up for me before loading them. This seemed fairly innocent, if a bit racy. But I was on a slippery slope. Soon my mother-in-law is making clumsy passes, trying to seduce me. I'm not the cheating sort, but... what if my wife joined us?