I fantasize about having s** with my wife’s sister. I’ve been married for 20 years and when I first met my now sister-in-law she was only 17. She just has s** appeal I cannot get over. That whole forbidden fruit thing. I m********* thinking about her. I had a regular phonesex thing with a woman who would pretend to my my sister-in-law. I have even thought of my sister-in-law when hailing s** with my wife.