Assisting my step sister in selecting lingerie for a romantic rendezvous

I assist my step sister in choosing lingerie for her romantic rendezvous, but things take a wild turn as we indulge in steamy sex. It's a fetish-filled, group escapade you won't want to miss.

I was helping my step sister pick out some lingerie for a romantic rendezvous she had planned with her boyfriend. As we were going through the racks of pretty undergarments, my step sister decided to model each one for me, striking various poses to get my approval. The sight of her in those sexy outfits was enough to stir up some intense feelings within me. I couldn't resist the urge to take her from behind, and as she was bent over, I began to explore her body with my hands and mouth. After a brief moment of passionate kissing, I took her from behind, riding her like a true stallion. We continued our sensual encounter in various positions, including cowgirl and doggy style, until we both reached the peak of pleasure.