He didn't heed my warning. Later that night, after dark, I saw my dear husband rubbing Debbie's back. He was running his hands up under her sweatshirt to rub her bare flesh. After we were in our bedroom, I gave him hell again. He claimed it was all innocent. He had been fooling with her since we were married, he pointed out. It had never come to anything. I asked him, "How would you like it if I let your brother Donny take some liberties with me. He's always looking at my ass and trying to see down my blouse. Brad just laughed and said, "Be careful, Donny is a wolf in sheep's clothing. He's nailed more women that he can count." I said, "Maybe we'll see how good he can count."
Now little sister Debbie had been spending time with Donnie. They went on some hikes together. They were gone for a while and I wondered. Still, I couldn't tell if they were going to end up together or not.
The next morning, my little sister grabbed my husband's ass as they gave each other a good morning hug. My mom saw it and laughed a bit. It's good that Daddy didn't see. Well, seeing him be so familiar kind of ticked me off. My husband's dismissal of my concern added to my irritation. He didn't think I was serious about fooling with his brother.
Later that day we were all going to the lake for a swim. It turned out that Donny and I were the last ones to leave the cabin. I decided to give him a show. While he was putting some drinks in a cooler, I walked into the kitchen. I was getting dressed, so I walked in and pulled my shirt over my head, showing my bare tits to my brother-in-law. His mouth hung open as he watched me put my bathing suit top on. I smiled at him and hurried off to the lake.
That evening after dinner, there was talk of going for another swim. My older sister suggested we skinny dip and a few of the group said yes. I didn't say anything but watched my dear husband. He smiled and said I should join in and he ran off to the lake. Debbie went too, of course. I held back a little and watched as the two of them joined other family members in stripping and going into the cool water. We had become casual as a family about skinny-dipping. My older sister and her husband and my brother and his wife were all naked. I blushed when I saw my brother's cock, but my older sister's husband had a nice prick that I kept peeking at. I think he was looking at me too.
While walking to the lake, I saw how my husband Brad and my sister Debbie looked at each other. Debbie has nice tits and a cute little ass to go with her blonde pussy. I saw Donnie in the lake with the others. I walked into the cold water. It felt good on my naked body. I walked over to where Donnie was treading water. The cold water gave me goose-bumps and my nipples were extremely hard. Donnie couldn't take his eyes off of them until I teased him about it. He walked toward me and reached out and took my tits in his hands. He said they looked cold and needed to be warmed up. He pulled me next to him and I rubbed my tits on his bare chest. The cold water had shriveled his dick down to a nub. I reached down and grabbed it and teased him about it. "I'll bet you make the girls happy with this little guy. It reminds me of a peanut."
Donnie wondered what was up, but had seen his brother flirting with my little sister. He commented that Brad needed to appreciate what he had and not think the grass was greener in another pasture. We kissed and he felt my bare ass. His cock was beginning to wake up and I felt it poking against my stomach. I giggled and gave it a stroke as I pulled away and went to join the rest of the group.
My slutty little sister and my "faithful" husband were nowhere to be seen. My older sister said Brad had gone back to the cabin. Debbie was gone too. I got out of the water, put on my clothes and walked quietly back to the cabin. Mom and Dad were on the porch and when asked, told me that Debbie and Brad were inside making popcorn. No, they weren't. I quietly looked for them and found them in our bed. She was sucking his cock when I walked in on them. Brad said "Oh shit!" and Debbie started to get up when I said, "Might as well finish. No reason to stop now." I walked off and went for a walk in the woods.
