I need some advice. I was in the hot tub with my wife and her super hot friend Sheila the other night and my wife goes in to get some wine. Sheila moves to the other side of the hot tub and notices one of the jets. She pauses in front of it and i realize that she is pleasuring herself. I said go ahead, my wife loves those too. She proceeds to moan in pleasure so i get up behind her and rub her nipples. We didnt have sex but i almost came at the thought of it. She finished just in time for my wife to come back outside and we never spoke of it again. I know sheila wants to do me and she thinks my wife is hot, how do i tell my wife i want a threesome?