Me and my husband are members for about 8 years of a swingers club and once a month we do a party at our home. Six years ago I told my sister-in-law we were swingers and after some time she asked me if she and my brother could join. It felt weird for me the idea of having a swinger's party with my brother and sister-in-law, I invited them hopping that they wouldn't came after the first party, but no, they enjoyed it and made new friends in the group, after a few parties they felt right at home. The surprise came 4 years ago...