My girlfriend and I explore taboo fantasies with my step sister

My girlfriend and I have always been adventurous in the bedroom, but lately, we've been exploring some taboo fantasies. One of our latest escapades involved my step sister. We invited her over to the house for a private session of fun and games. After a steamy massage, things started to heat up. I watched as my girlfriend pleasured my step sister, their bodies entwined in a dance of desire. The sight of them together was enough to make my own arousal impossible to ignore. I joined in, taking my step sister from behind while my girlfriend watched, her own arousal evident. The sounds of their pleasure filled the room as they explored each other's bodies, their moans echoing off the walls. The experience was beyond anything we had ever tried before, pushing us to new heights of pleasure. It was a taboo fantasy come to life, and one we definitely plan to explore again.