I stumbled upon my girlfriend being unfaithful and joined in for a steamy encounter

My girlfriend was out and I caught her getting it on with another guy. Furious, I confronted her, but she didn\'t care about my rage. She let him fuck her hard, moaning and screaming in pleasure. I watched as she took it from him, her tight ass bouncing with every thrust. It was sickening, and I couldn\'t help but join in.