On my special day, I stumbled upon my husband being pleasured by my stepsister in our home

On my birthday, I walked in on my stepsister and my husband, both of them indulging in some naughty fun. The sight of her on her knees, sucking his cock, was a shocking yet thrilling surprise. As the situation escalated, my husband and I explored our taboo desires, leading to a wild, unforgettable encounter.