My girlfriend and I have a threesome with my stepfather while my stepbrother watches and masturbates

My girlfriend and I have always been adventurous when it comes to our sexual escapades. We've experimented with various kinks and fantasies, but nothing has quite compared to the thrill of having a threesome. When my stepfather came over, we decided to take things up a notch and invite him to join us. We knew it would be a bit taboo, but we were excited for the challenge. As we undressed, his eyes were immediately drawn to my girlfriend's big ass. He couldn't resist reaching out and giving it a good squeeze. Meanwhile, my stepbrother was watching from the sidelines, stroking his hard cock as he took in the sight of his father and girlfriend engaging in sexual acts. The room was filled with moans and the scent of lust as we all gave in to our primal urges. It was a wild and unforgettable experience that left us all breathless and satisfied.