Only recently my sister-in-law told that my brother and her where swingers for a long time. I didn't know that but it didn't surprise me because I was also doing it with my husband, but we both were careful and only doing it when we where traveling or on vacations far from where we live. It was a very good surprise for both of us sharing this secret and knowing we all were doing it. From that moment we decided to make it happen between us four, and it finally did and I end up fucking my own brother and it was amazing. After a few times we even started to go on webcam with other swinger couples.