On a sweltering summer day, after I found out that I had a girlfriend, my sister's attitude suddenly changed due to jealousy. She flashed her massive breasts through her no-bra cami, sweaty and all, aggressively flaunting them while sticking her body to mine in a cunning way. This was too much… even though we're siblings, my dick felt like it was going to explode! Finally reaching the limit of my endurance, I had forbidden sex with her. We pressed our sweaty bodies together, getting all sticky and having passionate sex. Afterwards, we even got entangled in the bath, shooting loads repeatedly. The entire house filled up with the scent of our sweat and love. My sister's tits rubbed against me more erotically and obscenely than my girlfriend's, and her hand job powered up by jealousy made me cum in massive amounts. Even when my mom was nearby or while I was on the phone with my girlfriend, I couldn't help but fuck my sister over and over again…
