My girlfriend and stepsister engage in a heated argument while she secretly pleasures me with her mouth and hands

My girlfriend and my stepsister got into a heated argument, and amidst the chaos, my girlfriend found an opportunity to please me. While my stepsister was occupied, she eagerly took out my cock and began to suck it, while also fondling it with her hands. Despite the ongoing argument, my girlfriend managed to enjoy herself and bring me to climax, resulting in a satisfying release.