My Stepsister's First Threesome: I Share My Boyfriend's Cock

My hot teen stepsister has never had a threesome, so I decide to make her fantasy come true by sharing my boyfriend with her. We start by undressing each other while he watches, then we both take turns sucking his big cock, licking his balls, and making him rock hard. My stepsister is shy at first, but soon she gets into it, eagerly deep-throating him just like I taught her. Then he wants to fuck us both, so I ride him cowgirl while my stepsister sits on his face, grinding her wet pussy all over his mouth. After I cum on his dick, we switch positions and my stepsister takes him for her first ride, bouncing on his lap while I kiss her and play with her tits. He loves watching us make out, and he fucks her harder and harder until she screams with pleasure. Finally, he pulls out and sprays a massive cumshot all over her face and tits, then I lick the rest off his cock. My stepsister says it was the best first threesome ever, and we both cuddle together with his sticky cum still dripping from her smile.