I can never tell my daughter about my relationship with my son-in-law. Even now, he still makes love to me when my daughter isn't looking. This is the story of the first time my son-in-law and I had a sexual relationship. It happened a few years ago, when we went on a hot spring trip with my daughter and son-in-law. My daughter was usually harsh with her son-in-law, but he silently went along with it. I thought I had told my daughter that this isn't how marriage should be, but nothing seemed to improve. I felt sorry for my kind son-in-law, so I secretly told him to say anything I could to help him. I was soaking alone in the open-air bath when, to my surprise, he came in. He told me he loved me and kissed me. I naturally resisted, but he almost forced himself on me. It was a sudden event, and I was so surprised that a man like him would be interested in a middle-aged woman like me that I was stunned. That night, I was sleeping with my daughter, but my son-in-law came to me and made me cum, even though my daughter was right next to me. I remember the mean smile of my son-in-law at that time. I fell in love with him so much that it was almost annoying. The next day, I woke up early and went to the room next door to be embraced by my son-in-law who was sleeping there.