First time with stepsister's friend leads to wild sex

The main character, a typical college guy, has been harboring a secret desire for his stepsister's friend. He's always found her irresistibly attractive, and the thought of being with her has been a constant source of arousal. When he finally gets the opportunity, he can't contain himself and decides to make a move. Despite being a bit taken aback, she proves to be just as horny as he is. The two waste no time in getting down to business. She bends over, presenting her tight ass to him, inviting his throbbing cock to penetrate her. He eagerly takes her up on the offer, fucking her hard and deep from behind. The room fills with the sounds of their passionate coupling, their moans and gasps echoing off the walls. The guy's best friend watches, his own excitement growing as he witnesses the intense encounter. The scene ends with the couple still fucking, their lust for each other showing no signs of abating.