I recently went on holiday with my mum and sister (she's 19) and we ended up sunbathing naked (just sis and I). After a few drinks, we ended up playing a game where we would play with ourselves to catch the attention of someone else on the beach. In the past, i know she has seen my bf and I having sex and I enjoyed knowing she was watching. I would *almost* like to let her openly watch us and (again) *almost* wouldn't mind too much if my bf wanted to play with her for a bit. I have a gf (who my bf and sister both know about) and a part of me is afraid that if we ever let her watch, I might end up getting involved with trying to make her cum.
My two daughters (23 and 20) sunbathe in the nude in the back porch all the time. Only on our own property, never in public. They share a bedroom, and my younger daughter freely has sex with her bf in their room while her sister is there. Ok with me if it's ok with them.
I am certainly quite tempted. It was quite a while ago that we noticed her spying on us and I admit that I did find it a turn on. The thought of actually letting her watch us have sex is something that both my bf and gf likes (I've never done things with them together and probably never will). I wonder how I would bring the subject up? 'Hey sis, want to watch me fuck Jen or Mike?'. We've become a lot more open in discussing sex, but that might be a bit too direct!
