Introducing my stepsister and girlfriend to free use

I've been blessed with the opportunity to welcome my stepsis into our home, and as a gentleman, I've extended the same privilege to her. It's not every day that a young, 18-year-old stepsis is bestowed with such a gift, but I'm always up for a good time. So, when my girlfriend, a stunning 18-year-old beauty, expressed her desire to meet my stepsis, I was more than happy to oblige. The moment she laid eyes on my stepsis, I could see the spark of attraction in her eyes. And as it turns out, my stepsis shares a similar interest in free use. What followed was a steamy encounter between my stepsis and my girlfriend, a tantalizing spectacle that left us all breathless. But the fun didn't stop there. With my stepsis joining in, we indulged in a wild group session, exploring the depths of our desires and pushing the boundaries of our taboo fantasies.