Maybe it was the excitement of taboo sex with your sister. I sent hot streams of cum deep into my sister's body. Kim tensed up. Her pussy felt like a vise as she made sure she was getting every drop of my white seed. I shocked myself by the amount of hot juice I gave Kim. Soon enough I was empty. I left my cock inside my sister as we attempted to calm ourselves.
"I never thought something like that would ever happen," she said to me.
Kim did get up and go to clean herself up.
"You probably should get dressed. Alan will be back once he cools down."
We both got dressed and I was heading for the door to leave. My sister said she would contact me later that night. We had a quick kiss and I opened the front door. Alan was walking up the steps. He grunted at me as we passed.
I went home and replayed the events that had just happened. All I could think of was that I wanted Kim again. It was late in the night when my phone rang. It was Kim. She said she stepped out into the garage. Alan was sound asleep.
"Thank you for today. I have a confession to make," she said.
She told me that she had thought about the two of us having sex before. She put it out of her mind because it was something forbidden. She said she had lost it today in bed. She wanted to be fucked by me and she wanted to feel me cum inside her.
I asked Kim if we were going to have each other again. She said she would go mad if she couldn't have my cock fucking her. We soon began to meet each other. It was too risky for us to do it again at her house. Kim would come to my place when she could. Sometimes we got a cheap motel room and had sex there.
Kim was a dynamo in bed. She loved to mount me and ride my cock. She said I got so deep as she would slide up and down my shaft. I liked that position as well. I could reach up and pinch Kim's nipples. It didn't matter if she screamed if I fucked her hard in those motel rooms. They expected lovers to meet up there.
It got to the point of where we couldn't get enough of each other. I wanted Kim all the time. I asked her if she was ever going to leave Alan. Kim said she was just waiting to hear from me that I wanted her for good. Alan didn't take it well when he was told that my sister was divorcing him.
The guy was a total ass. Kim is free of him now. We have decided to move out of the area to someplace where people didn't know us. We haven't quite figured out how to explain to our parents we are living together. They are in another state. We thought about saying that Kim needed somewhere to stay after the divorce.
For now, I have Kim nightly as my lover. She says she can't get enough of my cock. I only hope I can supply her with enough cum to keep her happy.