Loving family is a good thing

Taking care of a long standing issue between 2 sisters and one's husband

I got married young, at eighteen. My wife was shy and quiet in public, but a real wild thing in bed. Her little sister was a hottie but 14 years old. She would openly flirt with me all the time. My wife thought it was cute and funny and tease me about it. In bed she would often pretend to be her sister. This went on for a few years. Eventually she got married and had a kid. We had one too. We would all get together with all the siblings and their spouses and kids and really had a crowded house.
What we would do is all the kids would sleep on the floor in the living room. Then adults would have the bedrooms. As it happened sis was going share a bedroom with my wife and I. A fold up bed was put in. This room my wife and her sister shared growing up. Sis made her usual flirtations which I didn't think much of until we were going down a hallway from opposite ends. We met in the middle and had to turn sideways to pass. She tripped on my foot and I instinctively put my hands out to catch her. This brought us face to face. We looked in each others eyes and then were kissing passionately. After a few minutes of this she pulled back and said "I'm sorry, I couldn't help it. It's been so long since I felt a man's arms around me." I said it's o.k. Glad I could help." I had such a raging hard on the rest of the night. It would go down for a while, but then she would do something like bend over in front of me with her ass inches away from me. bend over so I could see her tits in her top. The best was she sat on the couch by my wife and I. pulled her feet up and stuck them under my leg and said "Warm them up for me" with a BIG smile on her face.
Eventually it was bedtime. We made our way into the room got ready for bed and got in. Wife and her sister were chit chatting and I soon dozed off. After a while my wife woke me up by rubbing her pussy juices under my nose. I woke up quickly with a raging hard on. She then rolled on top of me and began rubbing her warm wet pussy on my cock. I tried to put it in her but she would pull away and giggle. After a few minutes of this, I was going crazy. "Just a minute, I got something for you" and got out of bed" Close your eyes" she whispered in my ear. A minute later she got back in bed, and got on top of me and took me into her very wet pussy. My eyes were getting better adjusted to the dark then I noticed It wasn't my wife but her sister. I'm like what the..... and then they started giggling and laughing. "Fuck her good, she has been wanting this for a while. And then it's my turn." OMG I EXPLODED in her pussy. Our juices mixing and flowing down my balls. Then her pussy started twitching and throbbing with her orgasm. That made me start to get hard again. She rolled off of me. My wife started sucking on my cock flicking the underside of the head with her tongue tip. This always drive me crazy after sex because it is so sensitive. Next thing I know her sister is going down on me too. My cock felt like it was going to split open. Then my wife said "My turn" then climbed on me and rode the hell out of me. We all soon fell asleep with me between them.
In the morning after we said our goodbye we resolved to get together more often.