That night, however, I was still on my period and didn't want sex. We talked about how I could do it while he teased my nipples. The thought made me a...little horny. Maybe it was the fact that it had been a couple days since I had sex, but I was a little excited too. He made it sound easy, but I was still unsure. I considered telling my husband that his friend and I had sex but somehow lying to him seemed even worse than what he wanted me to do.On Friday morning I, reluctantly, agreed to meet. My mouth opened widely as she signaled me to come forward. "Come closer and get a close look at me, I know you want to." I stood back up, made it to the top of the stairs and she met me there. Her five foot five figure stood only a few inches in front of my six foot one figure as I just wore a white t-shirt and black jean shorts. "Hello again, Tony. I seem to run into you up here quite often, why is that?" she asked, looking at me. My eyes examined her entire body, including: her small feet,. She was tall, nearly as tall as me, probably 5’-9” and very athletic. She was a star volleyball player for the high school team, and so had a strong upper body, great legs and ass, and small, perky breasts. She was not as good looking as Beth but the overall effect of her strong body and pretty face was extremely attractive. Her lips were full and luscious. I figured her boy friend was stupid for not learning more about women and sex.“So when do you two want to do this?”“Today. I mean. ” A second later I moaned, “OH Ellie, yes that’s it. I’m so sensitive there,”“So that’s a G spot,” queried Ellie.“So they say, but whatever it is it feels so damn good,” I answered as I pushed her finger deeper.And then my loving sister showed good instincts and slipped another finger inside my slick, wet, sex and stretched me out. I started to buck on her fingers.“Oh, that’s it, open and close your fingers as I move, like scissors,” I urged, lifting my hips.And bless her, she did, and I could.