I have the house all to myself one afternoon, so I decide to take the opportunity to masturbate. I grab my favourite vibrator, look up some hot BDSM porn on my phone, and start going to town on myself. I finger my dripping wet pussy while grinding against my vibrator, and it doesn’t take long for me to have a mind blowing orgasm. Satisfied, I take my earbuds out and roll over, when I suddenly hear the floor creak behind me. I whirl around, and am completely shocked to see my stepbrother standing there watching me through the curtains! I had been so carried away in my intense pleasure, I hadn't even heard him come home! I notice his phone in his hand, and realize that he must have been recording me masturbating. I demand to see his phone so I can delete the video, but he refuses to hand it over unless I suck his dick first. I’m completely grossed out, but realize that I don’t have much of a choice so I might as well get it over with. I get on my knees and start sucking his hard cock, and he grabs the back of my head to make me go deeper and faster. I was hoping he’d be satisfied with just a BJ, but then he tells me to get on my back so he can fuck my pussy! I initially refuse, but he threatens to show the video of me masturbating to all his friends, so I begrudgingly comply. He slides his cock inside my tight wet pussy, making me moan uncontrollably. I can’t believe I’m actually letting my stepbrother fuck me right now… it feels so wrong, but I can’t help loving the feeling of his dick inside me. Before long, I’m creaming all over his cock and begging him to fuck me harder and deeper. After awhile, I tell him to lay down so I can get on top and ride him. I start off in reverse cowgirl position so he can enjoy the view of my tight ass and pussy gripping his cock while I ride. I talk dirty to him the whole time, telling him how good his cock feels filling me up and how much I love being his naughty stepsister. When we’re both getting close, I turn around to face him so we can look into each other’s eyes while we cum together. I continue riding him until he cums deep inside my pussy and I cum all over his dick. Wow, I still can’t believe I just fucked my own stepbrother, but it felt amazing so I have no regrets. And about that video, I guess I’ll let him keep it… as long as he promises to fuck me all the time from now on!