serving at Cassie's pleasure

You watch as your fiancée sits up and spreads her legs wide. She looks poised, dominant and proud, but you know her well enough to know that it's an act for your benefit, and possibly Amanda's too. Inside she's certainly feeling very self-conscious about being naked and spreading her legs like that in front of you, never mind the fact that her best friend is also in the room.

As Amanda begins to crawl towards Cassie and you begin to realize what the 'reward' is, you appreciate just how uncomfortable Cassie must feel. She has never shown or expressed any interest in other women. But it would appear that in order to get Amanda to agree to your request, this is what she had to offer in exchange. And now the time has come to pay the piper, which Cassie intends to do without complaint and showing as little **** as possible.

Amanda moves her face to within an inch of Cassie's naked sex, and then hesitates. You can imagine what she's thinking. Is this what Cassie really wants? Is she about to cross a line that she can't return over? What if Cassie hates it?

"What are you waiting for, slut? I didn't see you hesitate like this when a cock was on offer." Cassie's chastisement is perfect - she manages to stay in character but make sure Amanda knows that she shouldn't back down.

"Sorry Mistress. Please accept this humble apology."

Amanda's tongue reaches out and tenderly licks Cassie's outer labia, slowly, all the way round. Once, twice, three times. Savoring the taste of her new Domme's honeypot as if it's her last meal on Earth. Cassie lets out a quiet sigh. Against your will, your dick twitches.

Cassie tries to maintain her dominant air, but her voice sounds a little weaker, a little more shaky than before.

"Hurry up, I don't have all day."

You could swear you see Amanda flash a mischievous grin. A moment later, her tongue penetrates Cassie's vagina. Cassie breathes in sharply, and then appears to hold her breath. She clenches her fists.

You find yourself frowning. You've done that before, but you don't recall her reacting quite so... vividly. Could Amanda's technique really be so much better than yours? Surely all it involves is sticking a tongue in a hole. There's not much room for style points, is there? The mystery is hidden behind the seal that Amanda's lips has on your fiancée's nether-regions. Perhaps having a pussy herself really does give Amanda a significant advantage. That and the plethora of practice she's had - being a kinky bisexual with low standards has given Amanda quite a lot of fish in the sea to potentially hook.

Cassie shivers and despite her best efforts to keep it inside, she lets out a very sexual mewl. Your dick twitches again. You feel somehow jealous and yet intensely aroused at the same time.

"Is... that the best you can do?" Cassie asks between rather heavy breaths.

Amanda once again doesn't reply, but instead tilts her neck back a bit, moving the center of her mouth from Cassie's hole to her clitoris. Her head begins to bob a bit, as if giving a mini-blowjob.

"F-fuck!" A surprised Cassie squeals. She finds herself falling backwards onto the couch, and tries to use her elbows to at least somewhat prop herself up. Amanda leans forwards, making sure to stay with her mouth locked onto Cassie's clit.

Okay, I've definitely never been able to make her feel this good. Now I just feel inadequate.

"Fuck fuck fuck!"

This is a woman who never used to swear. What is happening to her? Is she really this corruptible?

Amanda takes her right hand and plunges two fingers into Cassie's sex.

"H-hooly shit..."

She's losing all self-control!

"Wha... Wha..."

She can't even say a single word, never mind string a sentence together. How is this possible?

You watch as Amanda chooses the perfect moment, and doubles the pace of both her finger fucking and her head bobbing. Cassie grabs and pulls her own hair, and lets out the most animalistic groan you've ever heard her make. Her toes curl, and then she begins to shudder. The room is practically silent except for the wet sound of finger fucking as Amanda refuses to slow down, even as Cassie's hips begin to buck. She keeps going as Cassie reaches the peak of her climax, and keeps going some more as she comes down the other side. Finally, when she's completely sure that it's all over, Amanda slows down and stops. She takes the two fingers that have just been inside your loved one and shows them to you like she's holding some sort of trophy, and then licks them clean.

Nobody says a word for a good twenty seconds as Cassie just lies there, stunned and exhausted. Finally, in a dry, quiet voice, Cassie speaks.

"We're going to need to do this again tomorrow."

No we don't!

All you want to do is return to your normal boring sex life, where Cassie doesn't know what a real full orgasm feels like yet, or what it's like to be with another woman, and you don't have to roleplay some dominant fantasy. But the rules prevent you from even slightly hinting at your true desires. Spurred on by your confirmation that you would like to keep involving Amanda in your sex life, she ends up returning 9 out of the next 13 evenings for a repeat session.

Each session is the same - Cassie instructs Amanda to pleasure you, and makes sure to sprinkle in some dominant and degrading dirty talk as she does. Amanda makes sure to do her utmost to please you each time, giving you some of the most incredible and pleasurable sexual experiences of your life with her mouth, hands and breasts. But afterwards, you have to watch as Amanda does the same to Cassie, revealing what a truly skilled partner can do to pleasure a woman with their mouth, and showing Cassie the sorts of orgasms she's been missing out on with you.

Cassie is becoming more and more comfortable with her position as Amanda's Domme. In the most recent session, last night, Cassie even tried grabbing Amanda by the head and pressing Amanda's face into her pussy, not letting her go until she was completely satisfied.

It's starting to feel less and less like an act, and more and more like Cassie is just naturally dominant, at least with other women. She's still submissive towards you as agreed, but it somehow feels to you like it isn't as important to her to commit herself to that part of the role. She puts a lot of effort into acting all fierce in front of Amanda, and sometimes you feel more scared of New Cassie than anything.

One thing is unfortunately undeniable. As much as your human brain wishes things would just go back to the way they were, your animal brain finds the new Kinky Cassie extremely sexy. Every time she says something mean or sexual to Amanda, your cock responds with a twitch or by getting that little bit harder.

But perhaps it's best not to dwell on what I can't control.

The next morning, you have to check the website again. Unsurprisingly, the new options focus on different ways that your relationships with Amanda could develop.