Part One :

I come in the living room and my step-sister is watching some stupid yoga video while working out. I grab the remote to change the channel and as soon as I do, she freaks out! She starts screaming at me and fighting me for the remote! We somehow end up on the floor and she pins me down and all the sudden freaks out even more because she realizes my dick is hard! Before she can say anything, I flip her over onto her back really quickly hoping maybe she'll forget, but then she says "your dick is kind of hard". I go to get off of her, I can't believe I got a boner for my step-sister! How embarrassing.. But then, she says it's OK, and pulls me back on top of her!! I had no idea my step-sister was like this..

Part Two :

I wake up to my step-sister laying in my bed next to me. She must've snuck in while I was napping. I notice she's wearing nothing but a thong and my shirt. I ask her what's up and she says I've been avoiding her. I mean the other day was amazing with her, but she is my step-sister. She starts to slide her hand down to my dick and I grab her hand and I tell her no, it's weird, and I have a girlfriend. But she says she has this "issue" she hasn't told our parents about. She's just.. horny- all the time. She says the other day was nice, and we live together, and she can't have the whole town knowing she's a slut. She just wants to fuck me. And keep it a secret.