On a hot summer day, my girlfriend finally came along, causing my sister's attitude to drastically change. Sweating profusely, she aggressively flaunted her massive breasts through her see-through bra, making bold body touches that left nothing to the imagination. It was clear that she wanted more... but we were siblings after all! Eventually, our desires got the best of us, leading to a forbidden sexual encounter. We locked lips and grinded against each other passionately, our sweaty bodies intertwined. Afterward, we cuddled together in the bath, where she continued to tease and pleasure me until both of us reached climax. Our home filled with the scent of our combined sweat and love. Her perky tits pressed tightly against mine, driving me wild even during phone calls with my girlfriend. And despite being near my mother, I couldn't resist having multiple orgasms with my horny sister...