You go into your step-sisters room one night to ask if she'll watch a movie with you. step-Mom and step-dad aren't home, you're bored and she's a pretty good step-sister so she agrees! You're both laying in your bed, popcorn in hand when things start to get really spicy. A sex scene comes on during the movie and after a bit of teasing your step-sister finds out you're still a virgin!!! She's shocked and surprised... she wants to help you get more experience and feels like she might be the best step-son for the job, what else are big step-sisters for? After feeling her hands and mouth on you, you're now inside her tight wet pussy for the first time ever! You know she told you not to cum yet, but it's just too much and you cover her in cum. Tomorrow you're back in her room for more, as she hoped and knew you would be. She lets you experience more positions and eventually gets on top of you so that this time when you accidentally bust that huge load will have nowhere to go but inside your step-sisters pussy!!