You both are waiting for her when she gets home

You heard the door unlock as you were kneeling in front of Olivia, gently licking her hardening shaft. Olivia was watching the door, not looking at you, her attention elsewhere. "Finally," Olivia breathed. The door then opened and Stacey walked in. "Hey," she greeted Olivia. "You're home ea-" she slowed, then stopped, staring at you. "What? Olivia, who is that?" Olivia turned her head and stroked your hair. "Well, this used to be Finn, but I don't think the name suits her very well anymore. I'm thinking I'll go with: Fiona. Tell me pet, do you like that?"

You nod vigorously as you fondle Olivia's balls. "Of course, mistress. Anything is fine with me, as long as you pick it. You can call your cumdump whatever you want." Olivia smiles at that, then looks back at Stacey. "Now shut the door and get over here," she commands. Stacey closes the door and stiffly marches over to the living room, stopping at the edge of the carpet, standing right at the border of the kitchen. "Olivia, why would you do that to my boyfriend? I thought we were friends." Olivia glares at Stacey, but her smile is full of black mirth. "I am your friend, Stacey. But this is what you deserve. You had the marker, but you only used it to enhance your sex life. Fiona told me all about it. So I'm punishing you by having you service me, sexually."

She gestured to herself. "Now, come here," she ordered. Stacey marched over to her, her whole body tense. Olivia pushes you off her cock. "Strip her," she says, directing your attention toward Stacey. You nod, and move to obey. You walk behind her and resting your head on Stacey's shoulder, unzip the light jacket she is wearing over her crop top. "Finn," Stacey says, not moving, but her tone pleading. "Don't do this." You kiss Stacey on the cheek. "I have to obey my Mistress, Stacey. But don't worry, I still love you too. That's why you shouldn't fight it- she's really good. Mistress only fucked my pussy once and I am already ready for more."

You take the jacket off Stacey's shoulders and nibble on her ear, before moving down to her neck, which you lavish with kisses. Then you peel off her top, revealing a skimpy sports bra. You peel that off, revealing her nipples, which are already hardening and expose the rest of her chest, much of it still damp with her sweat. You take a deep breath and begin licking some of her exposed skin.

Stacey wriggles, trying to push you away without moving. "Finn, I'm dirty." You laugh. "I don't care about that- not before and certainly not now." Then you realize how lovey-dovey this must sound. "Mistress, should I stop?" You turn to Olivia. Olivia looks up from the couch, then waives you off. "Don't mind me," she smiles. "Keep going," she says while stroking her cock. You smile, then tweak Stacey's bare nipples, while pressing your voluminous breasts up against her back. "If only you had your cock, this would be so much more enjoyable," you whisper, and tease her neck some more.

Then you move onto bottoms. You pull off her shoes and socks, then once her feet are bare, you rise back up to her waist. Grabbing the waistband of her pink yoga pants, you slide them down, carefully revealing a pair of white and blue striped panties. Olivia's cock throbs at the sight. "Wow Stacey, that's surprisingly cute. I didn't think you had such a virginal side." You smile too, then tease her on her sides with a few kisses, before slipping her panties down and off.

Finally, it is done and Stacey stands naked before the voluptous and extremely erect Olivia. "So what now?" Stacey asks. "Do you want me to blow you?" Olivia makes a spinning gesture. "Turn around." Stacey does, and Olivia retrieves the marker from the table. She begins writing on stacey's back and you circle around, eager to see what's going on. Olivia writes, "Elastic Holes" and "No Pain when Penetrated" on Stacey's back. Then she starts writing stuff you didn't tell her about. She writes, "10x as sensitive" and then "Can only cum when Olivia wants her too". Then, with a wicked smile, she writes, "6 inch cock".

She taps Stacey on the back. "Turn around and sit down." She then patted the couch next to her. Stacey did so, turning back around and sitting next to Stacey. Her cock is bare "Fiona, suck her cock." You nod and grab Stacey's around the base of the shaft and begin worshiping it, caressing the bulbous head with your tongue. Stacey makes a slight moan at the sensation, but manages to hold most of it back. "Olivia, this isn't right. Please, just stop this."

Olivia watches the display with glee, watching you start to deep-throat Stacey, pushing yourself down on her shaft as far as possible, gurgling around her cock. "Not until you understand how I felt, Stacey. Not until you understand how frustrating it was to hear him pound your pussy through the wall, to hear you scream as I fingered myself." You try another attempt at deep-throating, this time getting halfway down, but you're too inexperienced, and come back up. Olivia frowns at that. "Fiona, I gave you big tits. Put them to work."

You smile at the thought. "Of course, Mistress." You grab your voluptuous breasts and wrap them tightly around Stacey's shaft, using your arms to squeeze her between them. Stacey clacked her teeth together at the sensation, fists clenching as she tried not to move. You smiled up at her and Olivia, then began licking the head of the cock that was poking out between them. Stacey's cock was already wet, with your saliva and her pre, so you figured it was ready.

You began to move your tits up and down, squeezing tightly and sucking on the head whenever it was visible. Soon Stacey was gasping, moaning louder than she had before. "Finn!" She cried. "I'm going to cum!" She arched her back, in preparation of that final push. You sucked harder, squeezing her tight and swallowing as much of her cockm preparing yourself for her cum.

But she didn't. Stacey stared in shock, her expression frightened and bewildered. "What?" Olivia snickered at her. "Sorry, Stacey, but you're not going to be allowed to cum. Not yet." She glowered at Stacey. "After all, this is punishment." Stacey whined in distress as you pulled her throbbing cock out of your mouth. "What now, Mistress?" You asked.

Olivia looked over at Stacey, her cock tip bright red, her pussy soaking the couch beneath her, then shook her head. "I know you're not a virgin there, and Fiona told me she took your cock at least once. But there is one place that I can still take." Olivia gestured to Stacey. "Get onto the floor on your hands and knees, and face the TV." Stacey nodded, doing as she was told. She crouched there before the TV, her firm ass towards us, cock hanging and dripping pre, her pussy dampening her inner thighs.

Olivia advanced upon that area, her own cock iron-hard. "Don't worry, Stacey, this won't hurt a bit." She then pressed her cock up against Stacey's rosebud and pushed in. Stacey's asshole was elastic, so it stretched, but she still made a groaning sound as it did. "Wait, Olivia," she feebly begged. Olivia ignored her, and began fucking her ass. Stacey cried out as she did, but soon those cries turned from discomfort to pleasure. Olivia gestured to you. "Bring me the marker." You do. Olivia pauses for a second to write on Stacey's ass, "Recently used an Enema" and then on herself writes, "Antiseptic Semen".

"There we go," she says, and begins pounding Stacey again. "Pet, it's safe now. Get over here." She pats Stacey ass. You lay your head where instructed and as she fucks your girlfriend's ass, Olivia occasionally withdraws her cum-slick cock to let you suck on it. You **** down as much as you can, enjoying the irresistible taste combination of your girlfriend's ass and your mistress' cock. Olivia then goes back to pounding Stacey, until suddenly she grunts. "Uh, fuck." She breathes. You watch her cock pulse up close, and then after a second, Olivia pulls it out and sprays the rest of her load across Stacey's ass and into your open mouth.

After that, Olivia lays back and Stacey slumps onto the ground, writhing in discomfort. You see her pussy is overflowing now, her cock rock hard. You give it an experimental tug and Stacey quakes. "Please, no!" She begs. "Olivia, "I need to cum," she says, her face pointing away, half-buried in the carpet. "Please let me cum!"

Olivia smiled. "Sure. Just do one thing for me." Stacey bucks her hips, wiggling her ass. "Anything!" Olivia's smile now transforms into an ugly sneer. "Break up with Finn and tell him you don't love him. You were just using him as a meat-dildo. Use those words. If you do that, I'll let you cum." Stacey hesitated for a long second. I was worried for a bit, I loved mistress, but I loved her too. Was this really going to be it for us?

"No." Olivia nodded. "Good job-", she paused. "Wait, did you just refuse me?" Stacey nodded. "You think this is enough to break me? Olivia, you have no idea who you're dealing with." Stacey, despite being naked, soaked in her own juices, her dangling cock hard enough to fuck a hole in concrete and laying virtually face-down in the carpet, somehow managed to sound tough. "Don't you remember what we used to call each other? I was, nay, I am the Pervert Princess. I'm not going to lose to a cock, even a girl cock."

Olivia scowled. "We'll see about that. But I guess you're right, it was premature to ask that. I still have plenty of plans for you." She gestured to you, and you moved away from Stacey's prone form. Olivia wrote on your stomach, right below, "Loses Easily to Cock", "6 inch penis". You immediately sprout a dick the same size as hers. In fact, you're pretty sure this one was the same size as the one you had while you were a man. She then had you lay on the floor. You did, and Olivia then ordered Stacey up. She moved Stacey over to you and had her lay down on top of you, then lifted her legs over her head, before making Stacey hold them there. Then, grabbing your newly-restored cock, she rubbed your shaft along Stacey's slit. "Yes, yes!" Stacey cried. "Please, fuck my pussy!"

Olivia smiled, used your cock to touch Stacey's hard clit, then shoved you up into her ass. Immediately, you had to bite back a moan. It was so tight and hot, it felt like your dick would melt. And the feel was much different than her pussy. You began to thrust, but Olivia put a hand on your thigh. "Not yet." Then, while you couldn't see, you felt her moving closer. She must be moving into position, you thought. Then you felt her cock rub against yours, and the skin of Stacey's asshole stretching away from your cock. Stacey moaned in distress. "No! Not my ass! Don't put two dicks in my ass!"

Olivia ignored her and began thrusting. The sensation was very unique, but it wasn't nearly as pleasurable as you might think. Still, Mistress wanted it. So you began to alternate your thrusts with Olivia's, the two of you shifting in and out to pound Stacey's ass. You stuffed it full of cock, stretching it out as you fucked it. Soon, the sensation became too much. "Mistress," you began. "Go ahead," Olivia said. "I'm almost there!"

You ramped up the thrusting, the two cocks taking turns to drive in as deep as possible. Finally, as you felt yourself ready to burst, you pushed in as deep as Stacey's ass could accomodate. Olivia followed suit, and you both came inside her ass. Stacey wailed pitifully. "No! Please, my pussy! My pussy!"

You both pulled out of her, you climbing out from underneath Stacey and setting her on back onto the carpet, facing up towards you. Olivia looked down at her, shaking her head at Stacey's whining. "I guess we're not finished, not yet." She wrote some things on Stacey's thigh, then scribbled something on your inner one. Immediately, you felt the effects.

Your cock rapidly deflated after you came, but this wasn't directly because of the marker. It was because of something else. Your bladder was full and you needed to go, badly. "Mistress, can you excuse me?" You asked. "No," Olivia ordered. "You have to go pee, right?" She gestured to the "Full Bladder" she had written on your inner thigh. She's not going to make me hold it, right? The thought horrified you. You desperately needed to go.

"There's no reason for you to go anywhere," Olivia continued, "As there is a perfectly servicable meat toilet right here." She patted Stacey's belly, then pointed to her asshole. "You don't mean-" Olivia nodded. "Or you can hold it." You look over at Stacey, who gives you an absolutely horrified look. You see she has written on her thighs, "Cannot excrete or urinate unless given permission by Olivia" and "Ass traps all liquids inside". But you really have to go, and you really want to please Mistress.

And she clearly wants this. "I'm sorry," you say, practically crying. You jam your cock into Stacey's ass. "Finn, no! Don't! I'm constipated!" You ignore it all and begin peeing, pouring golden liquid into Stacey's ass, inflating her stomach. As you do, you sigh in contented relief as Stacey makes pained sounds. Her stomach rumbles and as you pull out, the rumbles intensify. "I can't shit," she whispers. "I can't shit, I can't shit!" Olivia then strokes her pussy, making Stacey tremble, groaning loud enough that's almost a scream ."No, you can't. And you're not going to, nor piss nor cum until you break up with Fiona. Also, one more thing."

Olivia then stands and holds out her hands to you. "I was just going to wipe your memories after I had my fun, but I've decided that won't do anymore. I'm having too much fun. So instead, I want you too to become my girlfriends!" You blink. "Girlfriends?" Olivia shrugs. "Well, that might be too strong. So is wives. My whores? Concubines? Sex slaves? Cumsluts? Fuckpets? Regardless of what word you use, I want you two to be them. I want to fuck your slutty holes every day and drain my balls in you. So, what do you say?"