Stepbrother Penetrated me while I doing a Headstand Yoga

I'm lying on my back, arms stretched out, legs up in the air, in the middle of a yoga studio, my body painted in a perfect yoga pose. Suddenly, my stepbrother, whose eyes have been wandering my body, can't hold back any longer. He stands up, walks over, and gently leans over me. "You know, I've been watching you practice yoga," he whispers, his breath hot on my ear. "Your body is stunning." I blush, feeling a mix of excitement and nervousness. "And I've been watching you too," I reply, my voice barely audible. His smile widens, and he starts to unbutton his jeans. I can see the outline of his growing cock, and I feel a rush of anticipation. He pulls out his thick, hard dick and starts to stroke it, his eyes never leaving mine. "Do you want to try something new?" he asks, his voice low and seductive. I nod, unable to speak. He puts his cock in my mouth, and I take him in as deep as I can, my hands on his hips. He starts to move his hips, his cock sliding in and out of my mouth, and I can feel his body trembling. I know he's close, but he pulls out, his eyes locking onto mine. "Not yet," he says, his voice firm. He flips me over, so I'm on my hands and knees, my ass in the air. He pulls down his jeans and underwear, and I hear the sound of a condom packet being torn open. He rubs the head of his cock against my pussy, and I can feel the heat of his body against mine. He pushes into me, and I let out a moan, feeling his thick cock filling me up. He starts to move, his hips slapping against my ass, and I can feel my body responding to his. He reaches around and rubs my clit, and I can feel my orgasm building. I'm moaning, my body shaking, and he's grunting, his cock pounding into me. I come, my body convulsing, and he follows me over the edge, his cock pulsing inside me. He pulls out, and I collapse onto the mat, my body still shaking. He leans over me, his breath hot on my neck. "That was amazing," he whispers, his voice filled with satisfaction. I smile, feeling a sense of accomplishment and excitement. This was more than just yoga, this was a sexual adventure, and I couldn't wait to see what else we could do together.