I satisfy my stepsister's sexual desires with a passionate anal encounter while her partner is sound asleep

In a steamy scenario, I find myself in my stepister's bedroom, awakened by her seductive moans. As I peek through the crack of the door, I witness her partner, a slumbering stud, oblivious to her passionate tryst with a machine. Determined to fulfill her desires, I sneak in and engage in a sizzling anal encounter with my step sister.With a mix of amateur and seasoned expertise, we delve into a rhythmic dance of pleasure. Her partner's slumbering form lies nearby, his manhood pulsating with anticipation. I, the unsuspecting intruder, take the reins and guide us through an unforgettable encounter. The room echoes with our fervent moans, the bed swaying with our passion. We explore every inch of each other, leaving no desire unexplored.As the climax approaches, we pause, our breaths intermingling. The sight of her partner's throbbing member, the evidence of his arousal, adds an extra layer of excitement. With a final thrust, we reach our peak, leaving us spent and satisfied. As we clean up, we promise to keep our secret safe, a promise sealed with a shared smile and a deflated balloon.