Wait a minute. How did you get here?

Cassidy and Ella arrived at Carrie's apartment late Friday night, and you greeted them with a bottle of wine and a joint. After a short bustle of introductions (during which you couldn't believe how gorgeous all 3 girls were and what your future supposedly held), finding bedrooms, tossing suitcases, etc, the three of you settled down into the main room, just hanging out and chatting, Carrie wearing a t-shirt and short shorts, Cassidy a blouse and jeans, and Ella a sun-dress.

The conversation was fine, but the tension between you and Cassidy filled the room and you sensed was unavoidable. She kept glancing over at you, smiling, biting her lip, intentionally glaring at your crotch. You knew that Carrie could see it. Of course she was expecting it. You wondered if Ella had any idea.

You doubt it was the wine, since your girlfriend has never needed liquid courage, but as the conversation wound down, Carrie decided to fill an awkward pause with an unexpected comment.

"So Cassidy. I know that you've been sexting with my boyfriend." And a smile.

Cassidy's face dropped. It stared deeply at her sister, then at you, then back at her sister and started to look mortified. Ella happened to be taking a sip at that moment and started to cough.

"It's fine." Carrie said with a bounce in her voice. "I don't mind. I know you're here to get a taste of his beautiful cock. Hell it would be selfish of me to keep it all to myself, right?"

No response from Cassidy. She glanced at you with confusion. You shrugged. You never did say anything about keeping your liaison a secret. Ella just listened intently, possibly too awkward to interject anything. After all, what would someone in her position possibly interject.

Carrie went on. "I know he told you that we're pretty open. But he may have forgotten to mention one little detail." Carrie brushed her hand through her long glistening hair. "If he fucks someone else. I get to watch."

Cassidy took in a deep breath. And right there on the spot you almost saw her nipples start to harden and form under her blouse. "You want... I'm sorry I'm trying to wrap my head around... you just said... I'm sorry you want to watch?"

"Is that a problem?" Carrie responded. You started to wonder, was she really so casual about everything sexual, or was it an act she put on to relax others?

"Well.. um... I just..." You could see Cassidy's brain working overtime to process all these new developments. Predictably the thing she landed one wasn't the strangest part of the deal, but probably the first that managed to make sense in her mind. "You'll see me naked."

"So what? Girls have seen you naked before." Carrie said.

"Not.. like this. Not..." Cassidy searched for the words.

"Sexually? Really." Carrie feigned shock. Then suddenly turned her attention to her niece. "How about you sweetie? Have other girls seen you naked sexually?"

Ella began to blush intensely.

"I think that's a yes." Carrie said proudly. "Now, have they watched you fuck boys?"

And just like that Ella was blushing with wide open, scandalized eyes. "Aunt Carrie!" She said with embarrassment.

"They have, haven't they!" Carrie grinned wide, rising from her seat and going over to sit on the arm of Cassidy's chair, positioning herself between her sister and her niece. "See, Aunt Cassidy is the most inexperienced one here. Okay sweetie, let me ask you this. Have you ever had multiple guys drop a load on you?"

Suddenly you saw Cassidy realize that her sister knew everything, but before she could protest or react, the glass of wine in Carrie's hand was tipping and pouring all over her blouse.

Cassidy shrieked.

"Uh oh," Carrie said with a sly, planned, viciousness. "Well you don't want to be covered in wine. I guess you'll just have to take that off and I'll have to see you naked anyway."

"You bitch!" Cassidy shouted in a way that you weren't quite sure was serious or playful. Not that you had time to find out, as her follow up statement, "I should..." was interrupted by her sister leaning in and locking lips with her, much to her shock.

And the two sisters kissed, long, deep, passionately, tongues intertwined. You stared intensely, as did Ella.

Carrie pulled at her sister's stained blouse until it was up over her head and her bra-less torso was exposed to everyone in the room.

Finally their lips unlocked.

"What are you doing?" Cassidy declared.

"What am I doing? What are you doing you little slut?" Carrie threw back at her "you're planning on fucking my boyfriend and you thought it was going to be a secret from me?"

"I guess I just didn't.... OH MY GOD CARRIE! HOLY SHIT!"

Unsure what caused that reaction, you jump up to get a better look and see that Carrie's hand has crept its way down into her sister's pants. This is happening. It's happening right now.

Carrie pulled her own shirt off, then glanced over at her niece. "Well sweetie, what do you think? You wanted to see what it was like living on your own."

You couldn't imagine what was going through Ella's mind. Hell this was a shock to you, and you knew something was going down this weekend. Ella simply had no idea. There was no way to predict how she'd react.

Turns out she reacted by letting a smirk curl over her lips, then handing her half-full wine glass to her aunt who got the message pretty clearly and poured it all over her sundress.

And then it was off over her head, her 18 year old breasts exposed, her nipples huge, hard and within seconds being groped by the hand of her aunt that wasn't down the pants of her other aunt.

And, of course, you decide it's time for you to take some action.