Forbidden Lust: Tied Up My Hot Step Sister and Gave Her a Hard, Secret Fucking!

The house was quiet, too quiet. My girlfriend was out with her friends, leaving me alone with her little sister, Sarah. I’d been fighting it for months, the way my eyes lingered a little too long, the way I tried to avoid being in the same room with her. Tonight, the temptation was too strong. She was wearing one of my old t-shirts and tiny shorts, her blonde hair a mess around her shoulders. She caught me staring. An awkward silence hung in the air.

"Everything okay?" she asked, her voice a little breathy.

"Yeah, just…" I trailed off, my eyes dropping to her bare thighs. That’s when the idea hit me. It was wrong, so wrong, but the thought of having her, of tasting her, was consuming me. I grabbed a roll of bandage from the nearby shelf, adrenaline coursing through my veins. She gasped, backing away slowly.

"What are you doing?" she whispered, her eyes wide with a mix of fear and something else… something that looked a lot like excitement. I didn't answer, just advanced towards her. I gently tied her hands behind her back, securing them to a chair. Her big tits strained against the thin fabric of the t-shirt. Her nipples were hard, and I knew I had to touch her.

I knelt before her and ran my hand up her inner thigh. "You're so beautiful," I whispered. She closed her eyes as I kissed her neck, slowly working my way down to her chest. I sucked on her nipples until she moaned, then pulled away to watch her reaction.

Her eyes were glazed over, and a faint blush covered her cheeks. I pulled down her shorts, revealing her smooth, shaved pussy. She gasped and pushed her hips forward as I began to lick her. I teased her with my tongue until she begged me to stop, but I didn't. When she was practically screaming with pleasure, I took her hard and fast in a doggy style position, making sure she knew exactly who was in control. After multiple orgasms, I delivered my cumshot deep inside her, completing our forbidden act.

Afterward, we sat in silence, both of us breathless and reeling from what had just happened. The forbidden nature of it only intensified the heat. I knew this would change everything between us. Maybe for the worse, maybe for the better. But for now, I was lost in the aftermath, the taste of her still lingering on my lips.

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