When I was a kid my sister and I were close and would play house.
That usually meant we would rub on each other until I was sliding my cock between her pussy lips back and forth.
We were like 8 and I still regret not sliding inside her? ….
when we were in high school she would wear no bras and lose really short shorts and would sit across from me with her nipples partially showing and would prop her legs up exposing the sides of her pretty pussy lips.
She loved to get fucked by lots of guys and had hot perky tits.
I never did try anything and wondered if it was intentional or accidental…
either way I regret not trying anything