One hot and humid summer day, my jealous sister found out that I had a girlfriend and her attitude suddenly changed. She was covered in sweat and showed off her big tits peeking out from her braless camisole, clinging to me in a cunning way. If we did any more... my dick would explode, even though we were brother and sister! Finally, I reached the limit of my patience and had a forbidden sexual encounter. We pressed our sweaty bodies together, got all wet, and had a lovey-dovey sex, then we got entangled in the bath and ejaculated repeatedly. We spread the smell of sweat and love all over the house. She gave me a titjob with her soft breasts, which were more erotic and obscene than my girlfriend's, and her jealousy made me cum a lot. Even when my mother was nearby and I was on the phone with my girlfriend, I had sex with my sister over and over again...1