In a private therapy session, I never expected things to turn so naughty. My stepsister, with her curvy ass and alluring figure, set the room on fire from the start. The therapist, a seemingly polished man with hidden desires, quickly guided us into a forbidden game. He encouraged us to share our deepest secrets, and soon, everything spiraled out of control. My stepsister, with her sparkling eyes, began blowjob him eagerly, her tongue gliding smoothly and making him moan endlessly. I stood there, pulled into the rush of emotions, and before long, I joined in, touching her soft body. The threesome unfolded with intense drama, full of powerful and rhythmic movements. My stepsister lay there, legs spread wide, welcoming deep penetration into her anal area, while the therapist and I took turns delivering ultimate pleasure. Tears mixed with sweat, and then, the moment of creampie arrived, making her body tremble and flow everywhere. That taboo feeling, like a secret affair, made everything even more thrilling. I remember how my stepsister held me tight afterward, as if we were living in a dream full of unexpected twists. This session wasn’t just about relief; it unlocked new desires, blurring the lines between family and passion. If you’ve ever wondered about surprise adventures, this story will keep you hooked.