As I watched my step-sister's eyes widen in awe at the sight of my massive erection, it was clear that she was both frightened and intrigued. Her modesty was evident, yet she couldn't help but acknowledge the intense desire surging through her body. With each step towards me, her heart pounded harder against her chest, her breaths becoming shallower. She approached slowly, reluctantly, yet unable to resist the pull of our primal urges. Finally, she reached out and tentatively touched my tip, her fingertip grazing across the sensitive skin. It was a moment charged with raw emotional tension and passion, an unspoken agreement sealed by their shared desire.
