Brie and Alison were the closest of sisters. Growing up near in age, they shared everything from clothes to classmates. Everything was done as a team, and they always planned on doing every step of life together. As they got older, that continued with both of them going to the same college. Once again, same classes, same friends, same experience. Both sisters found loving boyfriends who turned into husbands, both sisters got married with the same general bridal party, and everything seemed to be the idyllic family life.
The two sisters even looked alike. Both just over five feet tall, both skinny and athletic, and both with petite figures that grew only slightly over time.
The only difference between the two was their nightlife. Alison was a quiet girl who didn't like going out much, who saved herself for her eventual husband. Brie, on the other hand, was the total opposite. Every night at school was spent in a different bed, with a different man. The night wasn't over until someone shot their seed into or onto Brie. The girl was a pleasant surprise on campus, with every guy knowing she was a potential fuck at any time.
As Alison grew into the ideal domestic wife, Brie only got wilder. From being trained as a submissive and slave, to letting herself get rented out, Brie checked off every box in her sexual bucket list. Her boyfriend/master enjoyed seeing his pet on all fours, being used to his friends' contentment. Brie was a total slut, and so proud of it.
Gradually, with the sisters as close as they were, Alison began to get curious. She questioned her sister, and heard back the detailed stories of her little sister's exotic sex life. Her parties. Her whoring. Her total satisfaction when her client cums inside of her. All of it made Alison wet with excitement. She began to get sucked in, and that is where our story begins...
---
Bursting through the door, Aubrey was panicking. She had just popped into her daughter's house to drop off a little gift, and an unfamiliar truck was in the driveway. Slowly opening the door, she heard the unmistakable sound of loud sex upstairs.
"Is my little girl cheating?," Aubrey wondered aloud.
She had so much to stay married for - her husband was truly like a son, her kids were over at their grandparents' house often. What was going on?
Dan, her husband, tried to calm her down. Brie wasn't one to cheat, she seemed closer than ever to her man. It wouldn't be like her. Too out of character. It had to be something else. That's not the kind of girl his daughter is.
"Dear, don't be worried. It can't be that. It isn't what you think," Dan offered. "Besides, both our girls are coming over for dinner tomorrow night. We'll talk it over then, as a family."
---
The two sisters came over as expected on Friday, neither knowing that they were walking into a conversational trap. Everything would be normal that night - talking about their families, husbands, kids, plans for the summer, just regular catching up. Nothing out of the ordinary, and nothing you wouldn't share with your parents.
After a little while, both girls noticed some unease in their parents. Something was up, and the awkward small-talk continued until their mother finally had to speak up.
"I was at your house yesterday, Brianna," Aubrey blurted out. "There was a truck I'd never seen before in your driveway, and when I peeked my head in the door...there were noises upstairs."
Brie's face flushed, and Alison immediately stared down. One of them was caught.
"That's...just a friend of mine. He comes over from time to time," Brie explained.
Her mother replied, "what do you mean? what about your husband?"
"He knows." An awkward silence filled the air.
