You should first read my story "Sunbathing leads to sex" to understand this one.
At another of my sex sessions with Audrey she told me that besides her brother she had a widowed sister, Emily, who sometimes comes to stay with her for a few days. She can be accommodated in the bungalow part of the house because she has no children, so is alone. Audrey had told her on the phone about the sex sessions she and I had. It seems that Emily had said she`d like to be present at one of our sessions. She asked me what I thought about that.
"Sounds interesting. Does that mean she would like to join you and me to have sex with me as well as you?"
"I think so. I`ve told her that you are able to have a couple of orgasms in one evening. As I understand it she would like you to do her as well as me".
"A sort of group sex, then. Is that what you would like?"
"It is. You could have both of us in one evening when she next comes to stay with me. I think you could satisfy both of us. I could watch you doing her and she could watch you doing me. I think she would like that and I would, too. I`ll se what I can arrange".
A few days later Audrey rang me and said that Emily had arrived and invited me to go round to her house to meet her that evening. When I got there Audrey introduced me to her sister. I had a nice surprise because she was a good looker and seemed to have a nice figure.
Emily said that she had learned from Audrey that she and I have sex in the nude. Would I like to have it with her as well as Audrey? I didn`t need much time to think about that!
"I certainly would, Emily. But when?"
It was Audrey who said "We could do it now. Emily has told me she`d like to try group sex and I would too. Neither she nor I have done it before".
We all undressed in a bedroom and, as I had discovered with Audrey, Emily also had a good figure. Long legs and firm breasts. Her pussy was shaved and I could see the lips of her cunt. Things went on from there because my cock began to grow at the sight of the lovely naked sisters.
Emily commented that my cock wasn`t very big though it had grown a bit. She could see that, of course, because I was stark naked in front of her. Then she said to Audrey that they ought to do something about that.
"Yes, we should, Emily. We want him to do both of us tonight so let`s give him a hand, ready for him to do it. You go first and I`ll follow you".
Emily took my slightly hard cock firmly between finger and thumb and stroked it until it was right up. Then she said it looked long enough for both of them, together, to hold it in the palms of their hands. She held the base of my erection and Audrey`s hand was next to her`s with thye tip of my cock showing above her hand. My cock must have been eight or nine inches long, something I had never thought about before.
"Let`s both of us jerk him off. It would be something new for me doing it with you, Audrey, Two of us together doing it. Shall we?" Emily asked me.
"Oh, yes. Please do. Audrey always masturbated me before we had sex and I liked it, of course. Having you both together doing it would be very special for me".
Together, both sisters stroked my hard cock which they held in the palms of their hands.