Unplanned fantasy became reality

My older sister Sandy had gone through a bitter divorce, and it was the first weekend she didn’t have the kids and had some alone time. She had plans with a girlfriend but that fell through, so she called me up to see what I was doing this weekend because it had been such a long time that she had some fun. I told her me and my girlfriend was going up north for the weekend with a group of friends. That she sure could join us if she wanted to we had a cabin to ourselves. Of course she declined but then later that evening she called and asked if it was all right if she came with us. So we went  north to the cabin and there probably was 12 of us and we’re partying setting around the campfire at night and just drinking having a great time. She felt awkward at first because she was much older than the rest of us, but after a little bit of drinking, sitting around the campfire and a joint being passed around she was able to relax  and she appeared to be having a great time. So about one in the morning everyone started going there way to their cabins and my girlfriend Kathy said that her and Sandy were going to take  A shower to get the campfire smell off them before they went to bed. Well I could see as they were walking to the cabin that both of them had plenty to drink they were kind of holding each other up and giggling. So I went into the cabin little bit later and I noticed the bathroom door was left open. The rest of the cabin was dark so they could not see me standing in the hallway watching them take a shower. Kathy started washing Sandy‘s hair, and then started washing her shoulders and back and Sandy said that it felt really nice to have someone touch her that it had been a long time. Kathy didn’t say anything but continued washing her back and then brought her hands slowly up her sides.

Without much resistance Kathy‘s hand slipped around the front and cupped Sandy’s breast. I watched as Kathy washed my sisters breast, and with her fingertips would tease her nipples. I could see Sandy had her eyes closed and her head resting on Kathy shoulder. Kathy then lightly kiss her shoulders and worked her way up to her neck. I could hear Sandy softly moaning and see that she was breathing very heavy, Kathy then with one of her hands drift across Sandy‘s stomach finding her way between her legs. As Kathy teased one nipple with her fingers and tease Sandy‘s pussy with her other hand,it didn’t take Sandy long to have an orgasm. Then Sandy turned and started crying and apologized for what had happened, Kathy said there was nothing to apologize for she just wanted to make her feel good. Sandy said that it felt so good and it had been so long since she had sex and she was so horny that she couldn’t resist. Kathy then took her hand up under Sandy‘s chin and softly kissed her on the lips, Sandy backed away just a little, Kathy said it’s OK you deserve this and softly kiss her again. I watched as the passion grew between my sister and my girlfriend then Kathy softly kiss her way to her breast and with her tongue and mouth licked and sucked on her nipples. I could see Sandy was breathing heavy again, and Kathy slowly kiss her way down Sandy‘s stomach, when she reached and pushed open Sandy‘s legs, I watched as her tongue parted her lips. As Kathy Massage Sandy‘s pussy with her tongue Sandy reached and held Kathy’s head there as she grind her hips. Sandy had another orgasm. Kathy then stood up and they hugged wrapping their arms around each other and then I saw Kathy reaching for the towels so I quickly made my way to the bedroom and got into bed. Not much later Kathy crawled into bed, and without saying a word slowly reached over and started giving me a blowjob. Then she climbed on top of me and started fucking me hard. I had never seen her this horny, when Kathy came she rolled off and laid next to me catching her breath, and she curled up next to me and whisper I saw you watching us it really turned me on .

The next morning Kathy asked what had turned me on, watching her with my sister or seeing my sister naked .

I said I thought watch her with another women. Kathy said she liked being watched, and seeing that I got excited and was jacking off. The next night after swimming, boating, everyone sat by the fire again. We were drinking and a joint was being past around, about 10:00 pm it started raining, everyone ran to their cabins for the night. 

Kathy, Sandy and I decided we still want to sit up and talk, and drink. Sandy and Kathy were sitting on the couch together, From the rain getting their shirts wet, and the cool night air. Neither had bras on, their nipples were sticking out.

I went to get another drink, and when I came back, Sandy and Kathy were kissing, they took each other’s shirts off. Sandy looked at me, and said you enjoyed watching last night. Sandy and Kathy wanted me to watch again, they wanted to watch me jerk off.

We were all enjoying ourselves, and when Kathy was between Sandy’s legs licking her pussy. I came up behind and started fucking Kathy from behind. I found myself looking at my sister, while fucking Kathy. Fantasying that I was fucking her. Then Sandy said she wanted to watch Kathy and I fuck, so Sandy went and sat in the chair watching Kathy give me a blowjob. Then watched as I licked Kathy’s pussy, and then started to fuck her. Kathy came quick and hard, she said having Sandy watching and masturbating really turned Kathy on.

Kathy asked Sandy if she wanted me to fuck her, Sandy said no, that would be wrong, a brother and sister fucking. 

Kathy and Sandy we’re making out again, then Kathy layed on top of Sandy and was kissing, Kathy looked over her shoulder, watching me jerking off. Kathy said to come and fuck her from behind. As I fucked Kathy from behind, she was still laying on top of Sandy. It was hot watching them kiss, while I fucked Kathy, I could feel my balls, slapping Sandy’s pussy, while I fucked Kathy.

Kathy told Sandy she wanted her to play with her pussy. Sandy played with her pussy, while Kathy layed on top and I fucked Kathy. I could feel my balls slapping Sandy’s hand now, then Kathy told Sandy she wanted Sandy to play with Kathy’s pussy while we fucked. I could feel Sandy’s fingers teasing Kathy’s pussy while I fucked her, then I felt Sandy’s fingers reaching around my cock as I slid in and out of Kathy.

Kathy said he is hard isn’t he, Kathy reached down and grabbed my cock, she guide it toward Sandy’s pussy, while still laying between us. It happen so quick, Sandy and I were caught off guard. Kathy rolled off Sandy, and there I stared at my sister, with my cock in her pussy. I didn’t move, Sandy’s eyes were closed. Sandy opened her eyes, staring into my eyes. Sandy softly said, it’s OK, I want you to fuck me. I teased her just putting the head of my cock in her, then sliding deep inside. Then withdrew again, teasing both of us. Kathy had moved to the chair and was watching, she was playing with her pussy. Sandy couldn’t take the teasing any longer and dug her fingers into my ass, arching her back. Begging me to not stop