I watch my stepsister masturbate, unable to tear my eyes away (she wanted me to penetrate her)

My stepsister caught me staring as she pleasured herself, her touch sending waves of desire coursing through me. She teased me, her fingers tracing a path to her backdoor, silently asking me to join her on this intimate journey. I couldn\'t resist, my gaze never leaving hers as I succumbed to her seduction.