Ha ha, - just validates: there's no secrets. Especially from family. Long before I married my wife, her sister told me she was a slut and would never "be true" to me. When I indicated I'd like that, it blew her away. Or so she indicated. A few years later the sister was having breakfast with me after spending the night with us, after a party with lots of drinking going on. When my wife emerged from our bedroom in her sexy lingerie, and her BF in his boxers we all had a laugh and a fun time - the cat was "out of the bag," so to speak, and that morning, for the first time, I had sex with my sister-in-law as my wife returned to bed with her BF after breakfast. Family just knows. You're kidding yourself if you think others don't perceive what's going on. They will.