My Girlfriend's Little Stepsister

I wanted to spend a nice evening with my girlfriend, Lexi Lore, at her place. After all, I thought that while her parents were away, there was nobody who could ruin our fun. Oh, I completely forgot about her sister, Dakota Tyler. That naughty girl was getting in the way from the moment I walked through the entrance door till the moment we closed the door of Lexi Lore's room behind us. Dakota Tyler even managed to spy on us through the closed door. We had no other way out but to tell her to come in and become a part of our sex game.