"That was nice," my wife whispered, as I rolled off her.
I could hear her shuffling as she pulled on her pyjama bottoms, and decided I should do the same, trying to avoid catching my t-shirt on my dwindling dick and leaving marks like snail trails.
I quickly wiped my prick with a tissue, removing both my own emanations and the lubricant my wife used, before slipping into the baggy trousers and sliding under the quilt.
And that was that. Our weekly (well - three out of four weeks) round of sex, over and done with. Every Saturday, regular as clockwork, except for birthdays, our Anniversary and Valentine's Day. I just hoped none of those fell on a Saturday.
It was good. We would watch TV until about 10.30, with a glass of wine each. She would change in the bathroom, and I changed in the bedroom, then lights went out and we got into bed.
Our goodnight kiss would be extended, and she would push her body into me. I would feel myself getting erect. Her hand wandered down, touching my swelling cock, and she would giggle.
"Ooh. Someone's feeling naughty," she would whisper, and stroke me.
I would lift her top and play with her breasts, touching her nipples, feeling them harden to my touch.
Then we would spring apart, each of us discarding our lower garments, then she fumbled in her drawer, found whatever lubricant she used in her bedside cabinet and rubbed it between her legs.
We came back together, and my fingers found her private parts, while her hand encircled mine.
After a couple of minutes playing, I would claim on top of her and push my way inside. Then I would hump away until I shot my load.
"That was nice," she would say.
Sound boring? It wasn't. I love and respect my wife and would never do anything that might impair her dignity. If this routine makes her happy. So be it. I'm happy too.
But... I'm not. In the middle of each week, I masturbated several times. I watched porn and wondered how the women got such pleasure from sucking a cock, or anal sex, or being spanked, or sharing with others, or exposing themselves to strangers or friends, pushed pieces of plastic into themselves, crushed their nipples with clamps. I know it objectified them. Surely, they must feel used, disrespected. Still... it made me hard as I jerked off onto a wad of tissue paper.
I loved watching oral sex. And women having sex with two men. And two women. And two women having sex (fucking) one man. And... well... you get the picture.
However, we were both in our mid-forties, married over twenty years. Surely once a week was as much as I was entitled to.
As I rolled over, I wondered if I should ask. We were still on a post-coital high. Well - I was. Maybe now was the time to ask if she would suck me. Or if we could actually be naked when we had sex. Or if we could keep the light on. Or...
That was the thing. She was still beautiful. She trained at the gym with me, was a keen swimmer and generally kept fit. After two kids, her figure was remarkable. Slim, just a few stretch marks (if she ever exposed them, on holiday or whatever, she called them her 'tiger stripes' and smiled proudly) as evidence of our daughter, hips broadening as a mature woman should, bum firmer and rounder than her friends. And her breasts... mmm... large, rounded, soft pillows. A DD cup enhanced by the slimness of her body, which attracted attention everywhere.
She always said she hated the attention - "Why can't people look at my face?" - but I often suspected she protested too much.
I used to get incredibly jealous. My blood would boil if I saw another man looking at her, but I mellowed. I don't know what it was. Maybe half a dozen doctors staring at my wife's cunt when she pushed out our daughter had some effect. Maybe I just got older and less body conscious. Whatever it was, I came to accept, and more recently, I actually liked it when guys checked her out. I felt proud.
Whatever. Our life was good. We loved each other and were happy with our routine.
Of course, our daughter would be home from University soon, with her friend, which might disrupt our routines. We certainly wouldn't have sex while they were awake - but thankfully we made very little noise, so maybe we could keep going most of the time.
The day after our Saturday 'naughty time,' my daughter appeared, as bright-eyed and vivacious as ever. She dashed in, threw her firm muscular arms around me and pressed her well-rounded twenty-year-old breasts into my chest as she kissed me.
She was a younger version of her mother - blonde hair, blue eyes, heavy up top and slim down below. She was tanned from a short holiday in the Spanish islands and glowed with a passion for life. A terrifying prospect for any parent. I remembered well how every red-blooded male at my University had wanted to get in her mother's knickers - but I was the one who, after six months of dating, finally got to slide into her.
I wondered if my daughter made the men at her University wait six months. Somehow, I doubted it, and a brief rush of parental outrage flowed through me.
Behind her stood a small girl dressed in baggy jeans and an oversize t-shirt, sporting the name of a band I'd never heard of. The effect was to render her utterly shapeless. She had auburn hair and freckles. Green eyes peered up at me through a pair of round spectacles.
"This is Imogen," my daughter enthused, "Immy, this is my dad, Kevin."
The girl stepped forward, extending a limp hand. I took it and was surprised as the fingers curled firmly around my hand. She held me firmly, her eyes fixed on my mine.
"Hi Kev. Good to meet you."
My daughter jumped in, just as the moment became a little uncomfortable.
"Immy's stopping for four weeks, if it's OK. Her mum and stepdad have buggered off on holiday to Australia and she doesn't want to be home alone. Is that OK?"
My wife and I nodded our agreement. We had a spare room that was unused, and it was good to see our daughter with a friend - especially as the friend didn't look the sort to go to night clubs and cause chaos. A bit of loud heavy metal, maybe, but I could live with that. Would be like getting back to my youth.
We helped them to unload their possessions from my daughter's car and left them to settle in their rooms.
Over the next few days, everything was fine. Imogen gradually came out of her shell, starting to join conversations a little, occasionally smiling, but retaining her distance from us - which was a little odd, as we heard her and my daughter laughing and enjoying themselves as one would expect people of their age to do.
They were an odd pair. My daughter had a penchant for tight crop tops, showing her toned belly and emphasising her breasts, often paired with denim shorts. Imogen, meanwhile, kept to her baggy jeans and outsize t-shirt, totally hiding her shape. I wondered if she had major body issues - perhaps scarring or something else that made her self-conscious. Regardless, even in the hottest weather, she remained embarrassingly overdressed.
On the third day, we decided to go wild swimming at a nearby pond - all of us except Imogen.