The humid summer air hung thick as I walked into the bedroom, expecting to find my LoveNestle sex doll exactly where I'd left her. Instead, a scene unfolded that made my blood run hot and cold at the same time. My step sister, Lily, with her big tits straining against her thin tank top, was straddling the doll, adjusting its position. My heart pounded against my ribs.
"Lily? What the hell are you doing?" I stammered, trying to mask the tremor in my voice.
She jumped, her cheeks flushing a deep crimson. "I... I was just... curious," she mumbled, avoiding my gaze. Her perfect body was even more breathtaking up close, especially now that she was flustered. I noticed the tattoos peeking from beneath her shirt’s strap.
"Curious? About my sex doll?" I raised an eyebrow, stepping closer. The air crackled with unspoken tension. The taboo of it all was intoxicating. I knew that if she felt good in her position, I want also to take my turn.
"Okay, fine!" she blurted out. "I wanted to see what it was like. To…to pretend. I’ve never done anything like this before, and I know it's weird, but…" Her voice trailed off. She looked like a kicked puppy.
I couldn't help but feel a surge of arousal. The idea of Lily, my step sis, wanting to experiment, especially with my doll, was a potent aphrodisiac. "And what exactly were you pretending, Lily?" I asked, my voice low and husky.
She bit her lip, her eyes darting back and forth. "A…a threesome," she whispered. "With…with you."
The confession hung in the air. My mind raced. This was insane. Wrong. And utterly irresistible. I moved closer, reaching out to trace the curve of her big ass. "Is that so? And what would this threesome entail?"
Lily’s breath hitched. "I… I don't know. Something hardcore. Something… intense." She reached out and placed my hand on her breast, over her clothes.
My fingers fumbled with the hem of her tank top, pulling it over her head. Her natural tits, a perfect Cup B, were even more beautiful than I’d imagined. She was everything I ever wanted but could never have.
I leaned in, my lips brushing against her ear. "Then let's find out," I whispered. "Let's see how far this swap can go." We both knew this was wrong. But the forbidden thrill, the tight pussy waiting, was too powerful to resist. This was the start of a taboo encounter I would never forget. And if the doll was a part of it, I could only imagine what the orgasm would be like with all the intensity of it.
