I catch my stepsister in bed with her boyfriend and make her pleasure me in return

I stumbled upon my stepsister and her boyfriend in the guest room, their bodies entwined in a passionate embrace. The sight of her, naked and lost in pleasure, ignited a fiery desire within me. I couldn't resist the urge to join in, and as I approached, her boyfriend willingly stepped aside. I took his place, guiding her through a rhythm that had her moaning in ecstasy. Her petite frame fitting perfectly against mine, our movements in sync as I took control. The room echoed with our shared pleasure, the scent of her arousal intoxicating. As I brought her to climax, I couldn't help but mark my territory, my release painting her in a testament of our shared passion. And as we lay there, basking in the afterglow, I knew this was just the beginning of our unconventional arrangement.