Phamily Business

My s*st*r knew about us. M*m did very little to hide the fact that we fucked. The locked bedroom door was the only thing shielding us from being discovered. Her screams of passion could easily be heard through the wall of my s*st*r's bedroom. It took her some time to muster up the courage to talk to me in private. "I want to ask you something. Promise me you won't tell m*m?"
"Okay. I promise. What is it?"
"You're fucking her, aren't you?"
"Pretty obvious, isn't it?"
"I can hear you going at it."
"Well, yes, we are fucking."
"Don't you feel bad about it?"
"I did after the first time. But she keeps making me feel good doing it. I'm used to it now."
"What if we did it?"
"I don't think she would like that."
"But what about you?" Cindy lowered her pajama bottom exposing her bush. It looked just like m*m's bush. "Touch it!" I reached for her bush. I slid my hand into her crotch. My finger slid into her finding her soaking wet. "I'm so fucking horny. I need your cock!" She reached for my bulge and began rubbing it. My cock was already semi-hard, and it ballooned into a full-blown boner. She reached into my gym shorts and took it in her hand. Just then we heard m*m coming down the hallway. We scrambled to cover up and detach.
"What are two doing?"
"Nothing. Just talking."
"You need to go start dinner. Tommy, come with me." I could see the anger in my s*st*r's face as she left us standing in the hallway. An hour later we emerged from m*m's bedroom satisfied. Later that night Cindy snuck into my bedroom, and we fucked. It would be the first of many encounters to come.