Fiercely independent, this brother and sister duo have always had a tense dynamic. One evening, as they argue heatedly, their bodies collide, sparking an unexpected, intense sexual tension. He pushes her against the wall, their faces inches apart, before they give in to their taboo desires. She unbuttons her blouse, revealing her perky breasts, as he unzips his pants, his hard cock springing free. They fuck passionately, their bodies slamming together, until their pent-up anger and lust are spent.