I am David Jackson, a 21-year-old male, still living at home while I attend college. I am 6'2, 225, in fairly good shape, more of a linebacker type body and someone who is really cut. My step-sister is Nina, also in school. She is a smoking hot babe, 5'8, 121 lbs., 34B, and tan, with tan lines. Our parents are my step-mother Clare, who is just an older version of her daughter Nina, at 5'6, 36C, and also tan (but without tan lines). She weighs about 135. My dad is Greg, who is 45. He's 6'1, about 250, with a bit more of a dad body.
So, there I was, minding my own business and in my room playing video games, when I got hungry at lunchtime, so I walked down the hall towards the kitchen. Nina's door was open, and she was in front of the mirror changing clothes. Like I said, she's hot, so I paused to look, and she saw me in the mirror staring at her.
"What are you looking at you perv?! I saw you watching me change!"
I responded, "Nina, all you have to do is close the door, I was just walking by." I wasn't but I was going to see if she bought it.
There wasn't a chance that she bought it, as her eyes narrowed, and she turned red, probably more from anger than embarrassment. After all, this wasn't the first time, and it's not like her bikinis didn't show as much.
"Just walking by, huh? You expect me to believe that?"
Mom, who had been in the living room, apparently heard this, and walked down the hall with a frown. She stopped by me at the doorway, and asked, "David, what's going on here?" Nina responded, "Mom, he was spying on me while I was changing!" Clare's eyes widen in surprise, her gaze shifting from Nina to David, "Is this true, David?"
"Nope, Nina's doing her exhibitionist thing again," I answered.
Nina smirked, and defiantly said that she liked the attention. Clare was amused and walked up to Nina, looking into her eyes before she shook her head and put her hand on Nina's shoulder. Clare then looked at me, saying, "David, you should know better than to give in to temptation." I noted that even though Clare was technically chiding me, her eyes were twinkling, with an unspoken request for me to respond.
"There's no crime in appreciating beauty when it's flaunted so freely," I responded, my tone steady, without any hint of guilt.
"Perhaps," Clare admits, her voice a soft purr, "we all have our... indulgences." She looked at David, then turned to Nina. "Isn't that what you wanted, David's attention?" Nina, let out a chuckle. "Well, if we're confessing sins, I suppose I'm not the only woman who enjoys being watched," she teases, her smirk broadening into a full, mischievous smile.
"Maybe it's time we all stop pretending and admit what we want," Clare suggests, her voice barely above a whisper. Nina turns to Clare, a look of surprise on her face that changes to intrigue as she looks into Clare's eyes. "What is it that you want, Mom?" Nina asks, her voice low and sexy. "Exactly what are we pretending? David asks at the same time.
Clare steps closer to David, her gaze never leaving his eyes. "I think it's time we explore... new boundaries," she sighs, as she puts her open hand on David's chest. David's breath catches as he wonders about Clare's proposal, his eyes moving between Nina and Clare. Does she really mean that, he wondered.
Afraid that he's misinterpreting her comments, "I'm game if you both are," he says, wondering if he's overstepped, hoping that he is on the samp page as Clare seems to be. Nina steps towards David. "Looks like we're want the same thing," she says, pointedly looking at the bulge in his pants. Clare smiles, excitement igniting in her own eyes. "Let's not waste another moment," she purrs, tracing a finger down David's chest to the top of his pants.