In the first chapter of this story, I only got as far as my Gran wanking my off. I will now continue with some more of our loving that night.
*
After I had my shower and cleaned up, I put on my PJ's and went downstairs to join Gran for dinner. Gran reassured me that I shouldn't be embarrassed because of what had happened, and asked if I was OK. I just nodded and replied "fine" in a husky voice.
We sat on the lounge watching a TV show, but I could not concentrate. Gran was sitting beside me, with her hand on my thigh, sliding it up and down, slowly getting closer and closer to my hardening rod.
"Gran, I think we should take this upstairs to the bedroom," I said.
"I think you are right Jimmy, I want to show you how to make love to a woman completely."
I made sure that the doors were all locked and turned of the lights, just leaving the light on the stairs. As we walked up the stair, Gran was in front of me. I watched her beautiful ass as it swayed from side to side, and slid my hand under her nightie so I could feel the softness of it. Her boobs were a little saggy but her nipples were standing straight out and look delicious enough to suckle and lick.
As we got to the bedroom, Gran turned to me and said, "Jim, if we go to bed together, we cannot tell anyone, it is something that has to stay between the two of us. While we are together in the house and no-one else is around, you can call me Alice --not Gran."
"OK Gran, .... I mean Alice," I replied.
"One more thing Jim, I like to sleep in the nude, are you alright with that."
"Of course I am Alice."
I will now continue this story from Alice's point of view.
I immediately raised my nightie over my head and slipped it off as I stood in front of Jim. He looked at me, at my boobs and nipples and my pussy, which had a tidy bush around it.
"Do you like what you see, Jimmy."
"Oh yes Alice."
He removed his PJ's and I saw his cock rear its purple head. "Oh Jim, I know that I love what I can see. That cock of yours turns me on soooo much. I only hope that you don't want too much sleep tonight."
"I don't think I am going to get much Alice, I think that we are going to be too busy to sleep."
"I am going to give that cock such a good workout tonight," said Alice.
"Let's get into bed."
We lay facing each other, and I took Jim's head in my hands and started to kiss him. Not a kiss fitting a Gran and her grandson -- but a very deep passionate kiss using my tongue to part his lips and tangle our tongues together. He moved his hands down onto my breasts and started to fondle my nipples. I moved my hand down his body until my fingers found his cock. He had started to grow, and as she softly stroked it, he began to stiffen and get very hard.