Sarah, my curious stepsister, was always sneaking around the house trying to catch me in compromising positions. But this time, she ended up getting caught herself. I walked in on her taking sexy photos in front of my mirror. At first, she acted innocent, saying she was just experimenting with lighting for her Instagram. But I knew better. As she stood there, her heart-shaped ass barely concealed by thin cotton panties, I couldn't help but feel a twinge of arousal. She looked up at me, our eyes locking for a moment too long. Suddenly, the tension between us snapped, and we both lunged for each other. Our tongues entwined, and our hands roamed each others' bodies. I knew I shouldn't be doing this with my stepsister, but I couldn't resist. She pushed me against the wall, grinding her hips against mine.
