Katie doesn’t call around on Tuesday. I spend the whole day on edge and get nothing done. Friday morning, I watch Clodagh pack her weekend bag and give her a long, languid kiss at the front door before she heads to work. She’ll go straight from work to the train station and catch the train to Dublin to be ready for the conference on Saturday morning.

By the time I come in from work on Friday afternoon, Aoife and Katie are already home from school. I can hear them having sex. The muffled cries of my daughter telling my lover that she’s going to cum do nothing to improve my mood after a shitty day at work.

I put three frozen pizzas in the oven and pour myself a large glass of wine. The girls come down to collect their pizzas, and my pussy gives an involuntary clench. Katie is wearing the same P.J. set as the first night we had sex. Her nipples are hard and poking through the top, and her ass looks fabulous in the tight shorts.

We sit in the living room to eat the pizza and watch a movie. There are the usual good-natured arguments over which movie to watch until we finally settle on Crush, a lesbian teen rom-com. I watch the girls’ over-the-top reactions to the usual cringing moments from high school, though perhaps I do laugh a bit too loudly at the “gateway gay” jibe and get a cushion thrown at me by Aoife in response.

The girls are snuggled under a blanket, and I can see their hands moving as they play with each other, imagining me oblivious. A couple of times, I catch Katie looking at me and making it very obvious she is touching Aoife as she holds eye contact with me.

When Aoife pauses the movie and announces she has to go for a pee, Katie pulls the blanket off to reveal that she has removed her shorts, and she now spreads her legs.

“I know something that tastes better than pizza, Mammy,” she giggles. The urge to get out of the chair and dive between her legs is overwhelming, but at the moment, the toilet flushes. Katie closes her legs and rearranges the blanket as if nothing has happened and smiles when Aoife comes back into the room.

Clodagh messages me to tell me she is safely in her hotel room and to wish Aoife good luck in the morning. I try to instigate some sexting, but she politely knocks me back, telling me she has to get up early and look her best for the presentation. In the end, I go to bed and masturbate while listening to Aoife and Katie having even more sex in their room across the hall. I imagine it is Katie between my legs rather than my daughter’s as I rub my clit like a needy teenager.

In the morning, the three of us stand at the front door. The school minibus, driven by their PE teacher, pulls up. I can see several of Aoife’s teammates already on board. Aoife turns to me, hugs me, and tells me to behave myself and that she’ll see me tomorrow. I wish her good luck. Then she turns to Katie and simply says, “Bye.” I can see the hurt in Katie’s eyes that she won’t hug her in front of her friends. Aoife hurries down the path and climbs on board. She gives both of us a wave, then walks down the bus to her seat. The two of us stand and watch until the bus turns the corner at the end of the road.

I instinctively hug Katie. “She’s just nervous about coming out. You can understand that, right?”

Katie nods and squeezes my hand.

I close the front door and turn. Immediately, Katie pounces on me, pressing me against the wall. Her hands paw at my tits as she kisses my neck.

“Slow down,” I tell her. “We’ve got the whole day and night.” I stroke her hair. “We are going to wake up in bed together like lovers do.”

“Mmmm, you’d like that, wouldn’t you?” she whispers. “You’ve been thinking about it, being woken up by your teenage lover between your legs?”

I groan. It’s so hard. I’m sorry, Clodgah, I think as Katie kisses her way up my neck. My hands reach for her hips, and I pull her to me. Our mouths meet and we kiss passionately.

My hands scrabble for her top, practically ripping it off her. Her breasts bounce free, pink nipples already hard and begging to be sucked.

I push her back against the wall. My hands squeeze her breasts as I kiss her jawline, whispering in her ear how she is mine now and I am going to fuck her so hard to make up for her teasing me last night.

She giggles. “I hoped you’d enjoy it.” She gives a sharp scream when I bite her neck. “No!” she cries. “You can’t mark me. Aoife will know.”

I nod, tempering my enthusiasm. I trail my tongue down over the swell of her tit, leaving a sluglike trail of drool in its wake. Her nipple quivers in anticipation as I trace the dimpled areola with the tip of my tongue. Her breath catches, and then I strike. My teeth nip, and she cries out in pain and pleasure as I greedily suck her into my mouth.

Her own fingers scrabble at the buttons on my jeans, pushing them down. Soft teenage fingers slide over my damp knickers as we make out in the hallway.

Suddenly, she breaks free and turns and scampers up the stairs. I follow, like a hunter chasing its prey. I corner her in Aoife’s bedroom. I push my jeans down and step out of them. My top is pulled over my head. Wearing only my socks and knickers, I approach her. She is sliding her shorts down her legs, stripping herself for me. She lies back, welcoming me. I crawl on top of her. I crawl on top of my daughter’s girlfriend on my daughter’s bed and press myself against her. Flesh on flesh, skin on skin. We kiss and make out.

Our hands seem to go between each other's legs at the same instant. The urge to take and claim drives us both on as we fill each other’s pussies with our fingers. I curl and uncurl, driving them knuckle deep as I press and tap on her spot. She mimics my movements. We thrust against each other, driving each other on. We kiss with tongues swirling, swapping saliva as we grind and fuck each other.

We are driven by a need to cum, as if until we do so, we can’t slow down enough to appreciate each other. She looks into my eyes. I see the same lust in hers that I know is reflected in mine. We hump and grind and fuck each other closer and closer.

It doesn’t take long. I wrap my free hand around her back and pull her into me as my hips buck and jerk and I cum all over her hand. She is milliseconds behind me. I screw my eyes shut and shudder as the pleasure courses through me.

Finally, we relax. We gaze into each other’s eyes, panting softly. My fingers cramp up, and I reluctantly slide them out of her. I maintain eye contact as I slowly bring them to my mouth and suck them clean.

“I’ve missed making you cum,” she whispers.

She reaches for the vibrator I saw her use on Aoife, and I shudder at the perversity of it. I spread my legs wider and offer my pussy to her. I luxuriate in the pulses of pleasure the rabbit ears provide to my sensitive and overstimulated clit. I writhe on the bed, leaking my juices onto my daughter’s bedsheets. Katie smiles and presses the vibrator against me while squeezing my boobs with her other hand. She watches me orgasm with a smug, satisfied look on her face.

After she watches me writhe and spasm on the bed, she finally switches the vibrator off and leans in and slowly licks me clean, scooping up my cum before kissing me to share my flavour on her tongue.

“We should eat,” I suggest, though I am reluctant to let this moment go, even though I know I finally have her all to myself. I watch as she pulls on a baggy white t-shirt with Go to Jail and the Monopoly board picture of the policeman on it. I probably should, I think to myself as I head downstairs to make my teenage lover a bacon sandwich.

After lunch, I run the tap to fill the sink to wash the dishes. With my hands covered in soap suds, I’m helpless when Katie presses into my back. Her hands wrap around me and squeeze my boobs while I try to wash a plate.

She kisses the back of my neck, and I can see her mass of red hair reflected in the kitchen window.

“I want you,” she whispers as she kisses my neck. “I want you to do everything to me. I have to be the one in control when I’m with Aoife. I don’t want that with you. I want you to take me and use me. Any way and every way you want.”

Her fingers slide over my body. She has one hand in my knickers and the other under my top. She writhes against me, pressing her pussy against my ass as I stand, transfixed.

“Are you sure you want everything?” I whisper, my mouth suddenly dry.

I’m sure,” she replies. A finger slides between my legs and through my folds as she reaffirms that I can do anything to her.

“I wasn’t ready for it last time, but I am now.” Her teeth nibble my earlobe, and she suckles on my earring.

“You can take my ass as well as my cunt.”

Her words are whispered. She sounds breathless as she slowly humps herself against me.

I lift my hands out of the dishwater and turn, grabbing her by the hips.

“Are you sure?” I ask, double-checking.

She nods slowly, biting her bottom lip. “Anything and everything, Mummy.”

I release her and reach for the tea towel to dry my hands.

“Go to my room and wait for me.”

She gives a smile and turns. I watch her leave the kitchen and hear her footsteps as she moves up the stairs and along the landing to my bedroom. To our bedroom. Mine and Clodagh’s.

“Forgive me, Clodagh,” I whisper to myself as I follow.

When I enter the bedroom, Katie is naked and kneeling on the floor. Her hands rest on her thighs, and though her head is bowed, I can see her watching me from the corner of her eye.

I strip my clothes off as I look at her kneeling there. She is perfect with her fiery red hair and her porcelain pale skin. The thought of doing anything and everything, whatever I want to her, is intoxicating. I’m lost in the moment. Nothing else matters now. Not Clodagh, not Aoife, not my marriage or family. It’s just me and Katie now.

I stand in front of her. She slowly lifts her head, giving me her puppydog eyes as she takes in my damp curls and wet pussy. She swallows and smiles. I reach and grab the back of her head and push her face into my pussy. Immediately, she begins to lap and lick, slavering my curls with her saliva as she rolls her face in my cunt.

I jerk my hips out, rubbing my clit against her face. My grip tightens, and I hold her in place, pushing her into me as I fuck her, just using her like a masturbatory aid. If this little slut wants me to do everything I want to her, then how can I possibly refuse?

I pull her off me and gaze down. Her eyes are shining with excitement. Her face glistens with a mixture of my juices and her drool. I pull her to her feet by tugging on her hair. She struggles to her feet, but I am pleased to see that she stands with her hands by her sides and doesn’t rub her hair and complain.

“You know what you are, Katie?”

I slowly walk around her, letting the tension build as she struggles to choose the right answer. I watch her swallow before answering in a whisper, “a slut?”

I lean in and whisper in her ear, “Good girl. You are a slut.”

I trail my fingers over her shoulder when I walk around in front of her. I pick my lipstick up from the dressing table and slowly write Susan’s Slut over those delicious tits. She glances down and blushes.

“A marked slut,” I inform her. “A claimed slut. You are mine, Katie.” I place my fingers under her chin and force her to look into my eyes. “You are my fucktoy for the next twenty-four hours, and unless I hear your safe word, I will do whatever I want.”

She looks confused. “I don’t have a safe word.”

“Then pick one. Something you’ll remember even when your brain is mush.”

She looks doubtful.

“What about colours?” I offer. “If it gets too much, you could shout Red?”

She nods. “I should manage that.”

I drop the lipstick onto the floor and grip both nipples with fingers and thumbs. I squeeze and twist them in opposite directions.

“Fuck,” she squeals, and her knees buckle as she tries to lessen the pain. All the frustration, all the pent-up lust and desire comes flooding out of me as I dig my nails into her tender tits.

I release them both and step back. She gives a quick sniffle but remains standing.

“They’re very sensitive,” she stammers.

“Good.” I run my fingers over the left tit then give it a swift smack. As she opens her mouth to protest, I bring my hand down on the right tit. The smack echoes around the bedroom.

“Does Aoife use you like this?”

She shakes her head. “No, Mammy.”

“Do you use Aoife like this?"

She shakes her head even more vigorously.

“No, Mammy. We don’t do anything like this. We’ve just been kissing and licking and fingering.” She pauses. “And we’ve used the vibe a few times too.” She grins. “Thank you for paying for that.”

I smirk. If I’d known what they wanted the money for, would I have handed it over so easily?

“Will you use your girlcock on me again, Mammy?”

Her eyes sparkle as she practically begs me.

“I want you to take me.” She blushes. “I need you to use me.”

The words are whispered, as if she is embarrassed to let me know what she wants.

“Get on the bed,” I order.

I open our toybox drawer and retrieve the strap-on. I step into the harness and pull it up. I watch as she lies on the bed. Her naked body is draped before me. She waits, licking her lips when I pull the straps tight and the plastic girlcock rises and thrusts out in front of me.

I step forward, feeling the strap-on swing between my legs. Putting a hand on each knee, I spread her open. Her tight teenage pussy is already glistening with excitement and anticipation. I crawl cat-like onto the bed, running my tongue along her leg as my hair brushes her inner thigh.

I kiss my way up her stomach before curling my tongue over her nipples. I suckle, letting my teeth graze the hard nipples before softly biting the left one.

“Fuckkkk,” she hisses, but she spreads her legs wider.

I suck the other nipple into my mouth, letting my teeth give little nips as I twist my head to look up at her. She rolls her head from side to side, whimpering as I tease her flesh, the girl cock drags across her wet slit as I suck and tease her firm pink nipples.

She presses her hips up towards me, looking into my eyes, begging silently as the strap-on rubs along her slit, parting her lips as it is dragged along her wetness, seeking the entrance to her wet velvet cave.

“Take me,” she begs, staring into my eyes.

I grab the shaft and guide the head to her entrance. I push it in a little, just an inch or so. She squeezes her walls, holding it there. And then, as she wraps her legs behind my back, I drive it into her, deep and hard.

Her back arches. She squeals, then wraps her legs tighter. My hips move in and out, driving the strap-on into her, over and over. I fuck her hard, taking her, making her mine. Her mouth is open, panting for breath as I drive it into her. I can hear my hips slapping against her spread thighs.

I place one hand on her marked tit, rolling her nipple, pressing, squeezing, smearing the word slut as the strap-on squelches, stretching her with every thrust. She writhes beneath me. I can feel the juices pouring out of me, mixing with hers as I move in and out. The base of the strap-on presses against my clit, every thrust sending us both closer.

Her feet press against my arse, trying to pull me deeper inside her. Her head rolls from side to side. Feeling her feet on my arse drives me on. I push in deeper, harder and faster. My hips move in and out like a piston as I fuck her, as I fuck my teenage lover, my daughter’s teenage lover. The afternoon sun streams in the window as I cheat on my wife once more.

Her breathing is ragged now, panting as the pounding in her pussy sends her ever closer. Every time I thrust into her, our mounds press together, our curls are matted with each other’s juices.

“Fuckkkk,” she whimpers, her eyes rolling. I can feel the sweat dripping down my face as I fuck her harder, chasing her orgasm, wanting to arrive with her. The smell of our lust fills the room. I can feel the viscous fluids smeared over my mound and thighs. I place my hands on either side of her body as I pound her. My arse is a blur as I slam the strap-on deep into her as she writhes, arches, bucks, screams and explodes beneath me.

The sight and sound of her orgasming sends me over the edge. I slam into her one last time, holding it there as the waves crash over me. Every muscle is clenched, shuddering before finally collapsing on top of her.

As I lie on top, the strap-on still buried deep inside her, she wraps her arms and legs around me and pulls my face to hers. She kisses my eyelids, nose, cheeks and chin as I pant, trying to bring my breathing back under control. She reaches up and brushes a stray strand of my hair back behind my ear, giggling.

“Fuck, that was a rush,” Katie whispers. Her fingers draw lazy circles along my spine.

“Mmmm,” I agree, bending my head to plant soft, loving kisses on her lips.

She sticks her tongue out, tracing the outline of my lips as her eyes sparkle beneath me.

“There is just one problem with you, you know.”

I freeze, my face must reflect my concern and confusion because she giggles and grabs my hips and rolls me over so I am flat on my back on the bed.

“Yes,” she continues. “Once is never enough.”

She straddles me. The girlcock is still buried inside her. As she grinds herself down onto the plastic cock I can see why guys like this position. As I watch her bounce up and down on me, her boobs jiggle about, at just the perfect height for me to reach my hands up to squeeze them, my thumbs brush her nipples as she arches her back.

She reaches down, fingers caressing my right breast, thumb and finger gripping the nipple, pinching it as she rides me. I push my hips up to meet her as she presses down on me. Her expression changes as she feels the girlcock pushed deeper inside her. The base presses into my clit as she pushes down. Lust, want and desire etched onto both our faces as we fuck on the bed.

She lifts her hips until most of the girlcock slides out of her. I can see it, glistening between her legs. Only the head left inside, then wham, she slams herself down onto me, forcing the girlcock deeper inside her. The air is forced out of her lungs as she whimpers and pants. Our faces are bathed in sweat as we fuck.

She grabs my hands by the wrists and pins them to the bed on either side of my head. She rides me faster now. Forcing herself deeper onto the plastic shaft with every thrust. My hips press upwards, my thighs smeared with her juices as the scent of our fucking fills the room.

“Stop, stop,” she whimpers.

I relax, letting the girlcock slide out of her, watching as she crawls off it.

“Finish me doggie style,” she whispers, glancing over her shoulder as she gets on her hands and knees on the bed.

I roll over onto my knees. She presses her face against the sheets. Her ass points high into the air. Her juices are smeared over her ass and thighs. Her labia are swollen, red, slick and dripping.

My fingers trace a line up her spine, gripping her gorgeous red hair, twisting the strands between my fingers, tightening my grip as I press the tip of the girlcock against her entrance.

“Give it to me hard, use my cunt.”

Her words spur me on. I tug on her hair, snapping her head back at the same moment as I thrust my hips forward, slamming the girlcock deep into her. I pound her, my hips bouncing off her as the sound of wet squelching slaps echoes around the room.

“Fuck fuck fuck,” she pants in rhythm with the pounding I am giving her. I pull on her hair, using it like reins as I ride her on the bed. Fucking her hard, filling and stretching her as I take her.

I glance up and our eyes meet, reflected in the dressing table mirror. She stares into my eyes as I fuck her. Her mouth hangs open, panting, wordless cries and moans are uttered as I drive it into her. I watch my tits swing with the exertion as she kneels, rocking forwards and backwards as I take her, giving her what she wants, what she needs.

“You’re such a dirty fucking slut, Katie,” I growl as I slam into her. She doesn’t answer. I can feel her juices smear on my thighs as we fuck. Her eyes roll in her head as she spasms. I watch her orgasm as I continue to fuck her, chasing my own. I pin her to me as I grip her hips and pull her deeper into me. I drive the girlcock deep into her squelching, orgasming cunt.

Her body shakes, spasms, and writhes. I slam, back arched, burying it deep inside her. I hold it there as fireworks go off behind my eyes. Cries, whimpers, howls and expletives spew from my mouth as I cum.

We slump onto the bed. I’m draped over her, my face lying on her sweat-stained back. Little bird-like whimpers come from beneath me as we both struggle to breathe. Our juices mingle as we lie, breathing hard, pulling the oxygen back into our lungs.

Finally, I ease my hips back, allowing the girlcock to slide out of her. A long string of cum dangles from her to the tip of the shaft. I unfasten the straps and push the harness down my legs. I lie beside her as she rolls onto her side, opening her arms for me.

I snuggle into her, planting little butterfly kisses on each other’s eyelids and nose as we recover. My finger idly draws circles on her skin with our juices as she looks into my eyes.

The Imperial March from Star Wars interrupts our reverie. A cold fear grips me. I’d set Darth Vader’s theme as the ringtone for Clodagh on my phone as a joke. I figured she’d never know, as she would be the one ringing me, so she would never hear it. But now, with Katie lying in a post-orgasmic daze on my bed, panic hits me.

“Fuck, fuck, fuck,” I cry. “It’s Clodagh on the phone. You need to get out of the room.”

“I’ll be quiet,” she giggles. “I promise.”

“No, she’ll be on video call. Go.”

Katie scrambles off the bed. I try to calm my breathing as the Star Wars music fills the room. Then I press Answer.

“Hey, gorgeous, how’s the conference?”

Clodagh smiles at me on screen, then pans her phone around to show lots of people holding plates of food and trying to eat while balancing a coffee cup at the same time.

“It’s dreadfully boring, and I would rather be in bed with you. Did Aoife get away ok?”

“She did. We waved her off at eight o’clock this morning.”

“And did you and Katie go back to bed?”

“What?”I explode with indignation. “Of course I didn’t go back to bed with Katie. How could you think that?”

“Jesus, Susan, calm down.” Clodagh looks shocked. “Why would I think you would be in bed with Katie? I just meant it was really early on a Saturday morning.”

I flush with embarrassment and quickly try to cover my tracks.

“I’m sorry. I just picked you up wrong. I really miss you.”

Clodagh nods warily.

“Are you in bed now?”

I can see her peering at the screen. Then something dawns on her face. She looks like she’s about to say something, then checks herself.

“OK, look, I’d better go. The conference will be starting again in a minute. See you tomorrow. Love you.”

“Love you,” I start to say back, but she has already hung up.

I stare at the blank screen.

“Fuck.”

I look up. Katie is standing, watching me from the door. She walks in, plucks the phone from my hand and leaves it on the dressing table.

“Now, where were we?”