My stepsister seduced me while I was reading a book. Delicious close-up rubbing by BootyFrutti

The evening did not foreshadow any events, I was just reading a book in my room. My stepsister was preparing for a test at my computer, then she apparently got bored and this lustful bitch sat down and started rubbing herself on my knee. This is where I understood everything - she needed my dick. But it was too late. I DIDN'T EVEN FINISH...