It was a week ago since our trip to the theatre and I was having trouble shaking the incredible experience of Di sucking my cock in the back of the car on the ride home from the theatre, with my wife sat oblivious in the front seat. I couldn't forget the words from my head that she'd whispered to me, as my wife and I got out of the car...

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It's another slow Autumnal afternoon, when I'm shaken from my day-dreaming slumber by the shrill ringing of our phone.

"Hello?"

A woman's voice, almost business like down the receiver, "Ian. Its Di. Come up and see me. Steve's out. Let's finish what we started last week."

"Err, what do you mean?"

"Do I have to spell it out to you, Ian? Haven't you been thinking about me since the theatre? Well, I'd like you to come to my house and fuck me senseless. Is that clear enough for you?"

My heart skips several beats and my stomach lurches in a mix of excitement and fear. "Err, Okay, I'll be up in ten minutes," I hear myself say, half whispering, looking around furtively and covering the handset in case my wife's in earshot.

"Good! Now you'd better put your little wife on for me, or she'll be wondering why I called. Course I won't tell her that I rang to ask her husband round for a fuck," she adds, mischievously.

With that, I drop the receiver and call my wife, Pat, to the phone. As she starts to natter away to her 'friend', I indicate that I'm off to take the dog out for a walk.

My knees are trembling in anticipation as I walk up the road to her house. In addition to the excitement, guilty thoughts are rushing through my head, Why do I do this? It's not that I don't love my wife, I do, but ever since we had kids, sex has been pretty much off the agenda, and as a consequence over the years, I'd sought solace in the arms of a variety of women.

At my age, I should know better! I continue to ponder. A retired man in his sixties probably shouldn't be behaving like this, problem is, I've never really lost the urge. If a beautiful woman makes a play for me, I just can't resist, no matter how guilty I feel about it afterwards.

I arrive at the house and knock on the door. Di in a white blouse and navy flared trousers opens the door and motions me in. She's still chatting on the phone to my wife.

"Oh it's the plumber... I'll have to go in a minute and show him where the stop-cock is!" to which I hear laughter down the other end of the line.

"Yes, the kitchen's straight through there," Di says for the benefit of my wife, "I'll be through in a mo..."

I let my dog off the lead and he runs straight through the kitchen to play with Di's dog in the garden outside. Still on the phone, Di walks up to me and grabs my cock through my trousers.

"He's quite dishy actually!" she says to my other half, smiling coyly and winking at me.

God! This is some bitch I'm dealing with here... I consider, but in truth nothing would stop me now, as Di makes her excuses to my wife and hangs up the phone.

"Right. Steve's just popped out to the supermarket, so it should give us at least an hour."

With that, she grins a wicked smile and, encircling my neck with her arms, begins to kiss me. It's a wet, hungry kiss and her tongue probes inside my mouth lustily. I respond by grabbing her arse and pulling her closer to me, so that my growing hardness digs into her midriff.

Feeling my cock against her she turns and leans her head back on my shoulder, inviting me to nuzzle her neck as she shoves her soft, large bum cheeks against my hardness. I move my hands from her waist, up her tight white cotton blouse to squeeze her full, heavy breasts. God I've missed these! I've wanked myself stupid this last week thinking about them and I revel in their softness and weight as I gently cup them.

"Hmmm. You like them don't you?" she asks. "Much bigger than your wife's, eh?"

"God, you're such a bitch!"

"I am aren't I?" she smiles wickedly, "but you still want to fuck me don't you, Ian?" she laughs, turning to look me in my eyes and kiss me, biting my lower lip as she does.

I start to lose my inhibitions and grab and fondle her breasts more roughly now, as I start to undo her buttons to gain direct access.

"Only me, Mum!" comes the sudden shout and both of us jump apart from one another, as if we've been electrocuted.

Seconds later her son, Rich, strides into the kitchen. "Hi, Mum!" he says to Di, then spotting me says, "Oh hiya Ian, what are you doing here?"

I hesitate, flustered by the situation and look to Di for help.

"Oh he just popped by to do a little favour for your Dad," she replied.

"Right. Do you know where my spare set of keys are? I've locked myself out of my flat."

"What again? Richard! You'll have to be more careful!" she says, pulling out a spare set from the kitchen drawer.

"Thanks, Mum! Gotta dash!" and with that he turns to leave as quickly as he arrived.

"Love you too, darling!" shouts Di sarcastically, seemingly much quicker to regain her composure than me. Maybe she's used to this sort of thing?!

As the door closes once more, she grabs my hand, "Right, let's go upstairs, where hopefully we won't be disturbed."

As we enter the marital bedroom we kiss once more before quickly relieving each other of our outer-garments, like a pair of randy teenagers.

"You're a stunning woman, Diane!" I gasp as my eyes admire her.

She smiles and, sitting alongside me on the bed, kisses me delicately once more, one hand on my cheek. Lust however quickly takes over, and as the kissing gets more passionate she fetches my cock out of my boxer shorts and gently starts to wank me.

She's dictating the pace here, but the sensation is heavenly, and something I rarely get to enjoy from my wife. I brush Di's hair back behind her ears, so that I can look into her brown eyes.

"Lie down," she says abruptly getting up, to step out of her black panties and remove her love heart necklace that sits proudly at the top of her delightful cleavage, placing it on the bedside table. She continues to fiddle with something else as I lay back and run my fingers up and down her long spine.

Then she turns and announces, "Right, Ian. I've waited long enough. I want that big cock of yours inside me now!" and with that she clambers astride me and slowly lowers herself down on top of me inch by inch, gasping as she does.

I look up at her, this gorgeous creature and can barely believe my eyes. She looks a good ten years younger than her true age, with skin still firm and very little in the way of stretch marks, belying the fact she recently entered her fifth decade.

Her bosoms tremble and shake within the confines of her skimpy black bra as she starts to bounce on top of me, her pussy walls holding a vice-like grip on my cock.

I want to see those breasts released, so pull at her shoulder straps and the bra falls towards to her midriff, revealing their true glorious size!

"Fucking hell!" I exclaim.

She smiles with the assurance of a woman who knows exactly what she's packing. No doubt they've opened doors for her throughout her life... I bring my hands up to squeeze and caress them, toying with her large brown nipples, Di all the while smiling down at me.

She starts to moan and buck more vigorously now and clasps the top of my hands with hers. I relinquish my grip of her mounds and entwine my fingers with hers instead.

As we hold hands, in a rare moment of tenderness amongst the passion, she slowly lowers her body down on me, our arms stretching out beyond my head, our faces meeting. She's a formidable woman I think, as we kiss tenderly and I feel her full weight on me, those gorgeous boobs pressing against my own chest, which is currently having trouble containing my wildly beating heart.

Slowly Di moves herself higher up my body and my cock pops out. Undeterred, she cradles my head, and pushes her globes into my face. I lick and nibble one nipple then the other, before burying my head between them biting and sucking on the soft, luxuriant pillows.

My arousal heightened again, I want to do her missionary style and see these breasts moving to my thrusts, so I roll her over and as I do I spot a red blinking light of a camera partially hidden by a picture of her children.

"Jesus! What are you doing? Filming it?" I exclaim.

"Oh it's just for Steve's benefit. It's his birthday soon, I thought I'd give him a little treat. As you saw last week, he gets a kick out of seeing other men with me."

Christ! Could this bitch use this against me one day? I've never been filmed 'performing' before, but then again I'd never had my cock sucked by a woman in front of her husband before last week! So I decide to go with it and try and give 'hubby' a 5-star performance!

With his wife now spread-eagled on her back in front of me, I grip her slim waist and re-enter her, pushing myself as high up as I can, my balls slapping against her as I start to thrust. The sight of those tits wobbling is like the eighth wonder of the world, and I quicken my pace as a result.

"Yes!" Di squeals, "Fuck me, Ian! Fuck me harder!" and I do my best to oblige. As I do, I feel her pussy tighten and seconds later her body convulses and she lets out a cry as an orgasm flows through her body.

I have to avert my attention elsewhere so that I don't cum in unison with her because I really don't want this to end yet. Letting go of her hips I slow my thrusts down and lower my full weight on top of her as we take a breather for another gentle moment, kissing and caressing each other, regaining our composure.

Maneuvering her on to her side so that we are both looking at the camera, I spoon up beside her and hear her groan as I re-enter her drenched pussy.

With one hand on her right breast, my left hand moves to her mound and my fingers run through her course red minge before alighting on her clit.

She throws her head back against me, as I start to work her. I nuzzle her, kissing and nibbling her neck and ear, whilst squeezing her breast as I start to thrust deeper inside her once more.

She's in her own world now, body weight heavy against mine, moaning softly, eyes rolling in the back of her head and closing. I'm staring into the lens whilst I fuck the life out of Steve's wife, revelling in my role as lead actor now in our own little porn movie.

Only this isn't acting. This is real life and weeks and months of sexual frustration are about to flow out of me and into this man's wife. I'm hammering away now and Di is gripping my arse, telling me to fuck her harder.

"Is this what he likes?" I ask, "Another man's cock in his wife. Another man cumming inside his wife?"

"Yes! Yes!" she gasps.

Her thick auburn hair in my face is intoxicating, but through it, I can still see her left breast shaking and dancing to my rhythm majestically, as I thrust for all my worth and frantically agitate her clit.

Seconds later Di moans again and with her second orgasm I can't contain myself any longer.

"Ohhhh Diannnne!" I groan as the first rope of hot cum shoots high up inside her. I look into the camera for Steve's benefit, "I'm cumming inside you, Diane. Can you feel it?"

"Yes! Yes!!" she exclaims, as I spurt several more waves of hot spunk into Steve's wife.

"Oh Diane, that was wonderful" I gasp, nuzzling into her neck, "How was it for you?"

Instead of answering, she quickly extricates herself from me and sits up, switching off the camera as I lay back on the bed, spent.

"Let's have our own private moment," she says, turning back to me and resting her head on an elbow, one leg over mine, while her free hand wanders over my body, stroking my exhausted cock gently, before moving up to settle on my chest as she looks into my eyes.

The post-coital moments are never something I'm comfortable with. As usual my mind is awash with guilt, as the realisation dawns on me that I've betrayed my wife once more. At my stage in life, retired and in my sixties, I didn't think I'd be experiencing such emotions again, but as Diane reaches forward to kiss me on the lips, the guilt comes rushing back.

"What's a matter?" she enquires, sensing my unease.

"Sorry, I'm just not very good at this bit," I meekly reply.

"Didn't you enjoy it?"

"You know I did!" I reply

"Well, I'd like to do it again, if you would?"

I hesitate briefly and then nod my affirmation, before she continues. "Good! Well next time I want you to make love to me in your wife's bed. Fuck me where you sleep with Pat. Would you do that for me, Ian?"

I stutter, looking for an excuse, but she moves herself closer to me, so that her breasts crush into my chest, to remind me what I'd be missing.

How could I resist? "Of course we can," I reply, lust besting guilt once again, "But this time no cameras!" I add.

"No cameras," Di reaffirms. "From now on, it'll be our little secret!" she breathes, leaning in to give me one last lingering kiss.