Stepmom Christie Stevens' Wild Sex Sleepover

My girlfriend and I were curled up in my room, enjoying a lazy afternoon. The room was dimly lit, with the soft glow of the setting sun filtering through the curtains. We were both in our pajamas, the kind that hugs every curve and leaves little to the imagination. I could feel the warmth of her body next to mine, her breath soft against my neck. We were just about to drift off when the door creaked open. I turned my head to see my stepmom, Christie Stevens, standing there with a mischievous grin. She was dressed in a silky robe that barely covered her curves, her long legs peeking out from beneath the hem. She tiptoed over to the bed, her eyes locked on us, and I could see the hunger in her gaze. She didn't say a word, just climbed onto the bed and settled between us. Her hands began to roam, exploring every inch of our bodies. I could feel her fingers tracing the outline of my girlfriend's tits, her thumbs brushing against the hard nipples. My stepmom's other hand found its way to my ass, squeezing and kneading the flesh. I could feel the heat of her body against mine, her breath hot on my neck. She leaned in and whispered in my ear, her voice husky with desire, "I've been watching you two for a while now. I couldn't resist joining in." Her words sent a shiver down my spine, and I could feel my cock hardening against her thigh. My girlfriend moaned softly, her body arching into Christie's touch. I could see the desire in her eyes, the need to be touched, to be fucked. Christie's hands moved lower, her fingers slipping beneath the waistband of my girlfriend's pajama bottoms. She found the wetness between her legs, her fingers sliding easily into the tight heat. My girlfriend gasped, her hips bucking against Christie's hand