You have been such an amazing Brother helping me with my wedding, I dont know how Im going to pay you back for everything. Knowing your Sister is about to be married off soon, you decide to take the opportunity to full fill a fantasy of yours : fucking your Sister. You casually say I could just take off my clothes to thank you for all your hard work. I laugh thinking your joking, but realize your not kidding. You really do want to see me take my clothes off. I get embarrassed and agree, my clothes start to come off. You need to see me completely naked its not enough. Everything comes off and you take it a step further telling me to touch and rub myself. I feel so guilty doing this, I know this is so wrong to do before Im married but you know I like it. You need to fuck your Sister, your cock is so hard now. I get on my knees so you can fuck me from behind. Your cock is way too big for me, your going to take my virginity before my Fiancé. You make me moan so much. You can feel your Sister wrapped around your huge dick. We fuck until you give me a deeep creampie. As much as I was embarrassed the whole time and feeling really guilty, I want to do this again.