After our second sexual encounter, my sister and I decided we could go on being involved in this kind of intimate relationship. We thought exploring our sexual desires could help us prepare for our future life, like when had a serious relationship or we got married. We established some rules though, like having sex just a week.

This usually meant starting fucking on Friday evening and staying in bed until Saturday afternoon. At that moment, both of us were in college and lived in a big house, just for us, as our parents were living abroad.

Having a big house implied many different places that we could use in our exploratory missions. Like, this other day, I went downstairs to make some coffee in the kitchen, and the first thing I saw was my sister pouring some milk into a bowl with cereal, wearing nothing but a tight white top. What an arousing vision!

I approached her, got behind her, and put my hands into her top to touch her big boobs. She moved her head backwards, and I kissed her neck. I also put my right hand on her amazing pussy and introduced two of my fingers. I fingered her for a couple of minutes and then lift her so she could sit on the kitchen island.

I pulled her top since I longed to see her boobs and then made her lie down. I ate her pussy while I continued fingering it. Then, I got on the island and fucked her. It was a quick one since both of us were very horny that morning.

Another day, we decided to take the sun in our backyard. We brought a couple of drinks and a speaker to play some music. We were lying on an inflatable mattress enjoying the sunny morning when Valentina, my sister, told me to move it towards the wooden fence.

“Why do you want me to move it?”

“Just do it,” she commanded.

As soon as I did, she pushed me so that I lay down on the mattress. Then, she took off the bottom of her bikini and put her pussy on my mouth. I understood why she had made me move the mattress. If it was very close to our tall wooden fence, our neighbors would not be able to watch us.

I licked her cunt intensively while I played with her tits. I also grabbed her ass and introduced my finger in her anus. Although my sister had said she didn’t want to have anal sex, she did let me finger her asshole.

After a couple of minutes of licking her hole and fingering her ass, she started to moan louder. So I intensified the work with my mouth until she could not take it anymore and came. Her pussy was so wet. I turned her around, got on top of her and fucked her. I moved so fast and within a couple of minutes, I came inside of her.

Our favorite place to fuck was our parents’ big bed. Once, we even played a porn movie in their room. Valentina said we had to watch at least one hour of the movie without fucking. Of course, she didn’t say we could not touch each other’s bodies, so while we watched people fucking and got all horny, she grabbed my cock and stroke it, and I rubbed her pussy and touched her tits. Then, when the timer announced the hour was over, we started fucking in different positions while watching the different sex scenes on TV.

Our exploration once took us to a sex shop. We bought a couple of things, like handcuffs, lube, a dildo and I got a small anal plug. We spent almost the whole weekend playing with our new toys. I still remember that image: my sister handcuffed to the bed frame, her eyes covered with a sleep mask, her pussy filled with a dildo, and her anus with the butt plug while she sucked my dick.

A great place to do it was also our bathroom. We had a nice big bathtub, so usually on Sunday, we filled it with water and soap, brought some wine, and music, got naked and got in the water. Then, we would start touching each other’s body, lick here, suck there, and then I would penetrate her and fuck her until we would come.

That was life. It was as if sex had become an obsession for both of us. I wasn’t interested in seeing other girls as I had everything there at home. I knew this was just temporary, I would get a real girl someday, but I was determined to enjoy what I was doing, living with my sister.