Five years ago, I remarried a woman, both of us having been divorced previously. She had one son from her former husband, who is now an adult and already married. As a result, I've had only distant, relative-like contact with him, meeting just a few times a year. Although we married later in life, our sexual compatibility turned out surprisingly good, and we made love about once a week. However, due to long-standing concerns about having children, I always used condoms to prevent any accidents. Around this time, my wife became close friends with a younger couple she met through a women's social group, and our families began spending time together frequently. The couple was around our son's age, warm and easygoing, and I genuinely looked forward to seeing them. Then one day, I witnessed my wife in a shocking situation.