My wife's sister goes to the bathroom during her rest and we have unprotected sex

My wife and I were enjoying a lazy afternoon when my little sister-in-law decided to take a stroll to the bathroom. Unbeknownst to her, my wife joined in, leading to an unexpected encounter. As soon as I caught them, I couldn\'t resist the urge to fuck her, and the scene that unfolded was nothing short of wild and passionate.