Arriving home from work I hear my wife Natalie talking in the lounge. Poking my head around the door frame I see her on the sofa with her best friends Gillian and Kelly. They don't see me so I make my way upstairs and take off my work clothes.

Putting on a t shirt and joggers I head downstairs and hear Gillian say - "Dean was over at our house a couple of evenings ago. By the time he finished fucking me I couldn't even walk".

I hear them all laughing as I go to the kitchen to make a drink.

Gillian has been friends with my wife since junior school. She's about 5ft6, early forties, long curly blonde hair, pretty face and curvy. She's married to Kevin however they've an open marriage hence why she was fucking this Dean fella.

I've never liked Gillian as she's loud, bossy and tries to fill Natalie's head with ideas about sex. For instance my wife doesn't like big cocks. A guy she dated before me was well endowed and apparently he hurt Natalie when they fucked. He was rough, selfish and didn't care if she was aroused or in pain.

After dating him she only went out with guys who had average size cocks.

As for Kelly she and Natalie have worked together for years. Kelly is around 5ft4, late thirties, shoulder length brown hair, attractive and slim. I like Kelly and she's dating a guy called Trevor who I've only met a few times but he seems nice.

After making a cup of tea I sit at the kitchen table. Not fancying going into the lounge I sip my drink and hear Natalie's voice - "I didn't hear you come home love".

Turning my head I see her walk over to me. My wife's 5ft4, forty two, long straight dark brown hair, beautiful, slim with b cup tits and the most exquisite arse. Kissing me on the lips she asks how work was but before I can reply I hear Gillian's voice - "Ahh Nathan I was trying to convince your wife to spend an evening with Dean to experience the fucking of a lifetime".

— "Natalie is married to me and we're happy with our sex life thanks" I reply.

— "I'm married too but that doesn't mean you can't fuck other people" said Gillian.

Natalie knows I dislike Gillian and seeing I was getting annoyed my wife says - "Don't listen to her Nathan. She's knows you and I love each other and wouldn't ever cheat".

Gillian grins then walks back out to the hallway and Natalie follows her. I hear them talking in the hallway along with Kelly then the front door closes. Natalie comes into the kitchen and says - "Fish fingers, chips and beans for dinner?"

— "That'll be good" I reply then standing up I head to the lounge and turn on the TV.

That evening as we watched TV Natalie says - "Nathan you know Gillian keeps saying I should experience a big dick again. She mentioned that Dean was big and well.....I was thinking that it could be fun".

Muting the TV I turn to Natalie and say - "But you're married to me and earlier you said to Gillian you'd never cheat".

— "I know I'm married love however it wouldn't be cheating as I'd want you there in the bedroom with us" replies Natalie.

— "A threesome?" I ask.

— "No love you'd be sitting in a chair watching. It'd be a turn on for you seeing me and Dean at it" she replied.

Shaking my head in disbelief I say - "Seeing Dean with his big cock making you cum harder and better than I ever could isn't a turn on".

— "Trust me Nathan you'll enjoy it" answered Natalie.

Sighing I reply -"Do what you like" then I unmute the TV.

I was inexperienced sexually when we met where as Natalie had been with a few guys. I'm barely six inches when hard and I used to cum quickly however over time with Natalie's guidance I learnt to fuck longer. However hearing Gillian talk about Dean I can't compete with him!!!

The following day I bump into Kelly who lives in the same street as us. She says - "Gillian was saying that Natalie has decided to have sex with that Dean guy"

— "Yeah she told me last night she wanted to try" I reply with a frown - "I wasn't keen".

Kelly smiles and says - "You and Natalie have a wonderful marriage so her wanting to fuck Dean isn't going to harm that".

— "I'm not a particularly good lover Kelly and when Natalie spends the evening with this guy she'll want more of him" I reply.

Kelly touches my shoulder and says - "She isn't that type of girl"....

Gillian had arranged for Dean to come to our house on Friday evening. I said to Natalie I'd prefer to go out and leave them alone but she insisted I stay.

— "You'll do it in the spare bedroom?" I asked Natalie.

— "No love it's nicer in our bedroom" she replied

— "That's our bed!!!" I exclaim.

— "I'll change the bedding afterwards" she replied.

— "He'll wear a condom though?" I ask.

— "No love it's more fun without " answers Natalie with a smile....

Friday came and after dinner Natalie went upstairs to get ready for Dean while I loaded the dishwasher. About an hour later she walked into the lounge as I was sat on the sofa. She's wearing a short black dress and black leather heels.

— "How do I look?" she asks.

— "Smashing love" I reply whilst thinking that I'd prefer it if she was wearing that for me.

Hearing the doorbell soon after Natalie went and answered it. I heard talking then she came into the lounge and introduced Dean. He shook my hand and smiled. Dean's about 6ft, mid twenties, short blonde hair, strong build wearing an expensive blue shirt, black trousers and leather shoes.

I get him and Natalie a drink and though I hardly touch alcohol I poured myself a glass too. We chatted for a bit then my wife smiled and said - "Shall we go upstairs?"

— "Fuck she's keen" I think to myself.

As they both make their way out to the hallway Natalie says - "Come on Nathan".

— "I'll be there soon. You start without me" I reply.

Hearing them climb the stairs I get myself another drink and slowly head up to our bedroom.

Reaching our room Natalie has already taken off her dress and shoes and is laying on the bed in her black satin bra and knickers.

Dean who's just pulling off his trousers has already taken off his shirt and shoes. He obviously goes to the gym a lot and wearing only his boxers he climbs onto the bed and lays next to Natalie.

Natalie see me standing there and says - "I put that chair there love for you to sit on".

Heading over to the seat which is in front of the wardrobes Natalie and Dean begin kissing before I even sit down.

Sipping my drink I see my wife's hand on Deans neck and his arm around her. They keep kissing then Dean kisses down to her neck and onto the tops of her tits which are above her bra. Natalie sits up and unhooks it and lets her bra drop to the floor.

Her beautiful tits so soft and her nipples like stones Dean starts kissing and licking them all over making Natalie moan. Then he kisses down over her belly and onto the tops of her thighs. Pressing his lips against the outside of her knickers he kisses her crotch through the material then lifting her arse he pulls my wife's knickers down.

Letting them fall to the floor he parts Natalie's legs wide and moves in between them on his knees. I can only see my wife's mound and the top of her pussy from where I'm sitting but she's shaven it for Dean as the other day it was stubbly.

Lowering his face towards Natalie's pussy Dean begins licking her. My wife moans softly as his tongue moves between her folds then he starts to flick his tongue onto her clit. He's going slowly as he moves his left hand under her arse and holds her.

I see Dean's right shoulder moving and when Natalie starts moaning louder I guess he's pushing a finger or two inside her. Soon she begins to tremble and her body clenches. Groaning she comes to a shaking orgasm......

Natalie's still trembling as Dean keeps flicking his tongue. He doesn't let her breathing steady and I hear my wife moan - "Ohhh..... Shitttt". He speeds up and Natalie bucks her hips and moans loudly. Then after only just cumming she starts trembling again and clenching her body she groans as she cums.

Grabbing a handful of duvet she closes her eyes and shakes.....

When I make love to Natalie I always make her cum first with my tongue. Knowing that Dean would be a superior fuck with his cock I hoped he wouldn't be with his tongue. Fuck!!

Lifting his head while Natalie who's breathless opens her eyes he straightens up and I observe that his boxers have tented. Natalie has seen his bulge too and when Dean pulls his boxers down his cock bounces upwards. He's so big!!

Dean strokes it until it's fully erect. At least eight inches and without exaggeration as thick as my wrist. Natalie's eyes widen as she gazes upon his cock as Dean pulls his boxers underneath him then he moves over the bed to Natalie's left side still on his knees.

Natalie sits up transfixed by his cock and when he nears her she hesitantly moves her right hand towards it. Touching Dean's tip she strokes her fingers downwards then wraps her hand around the base of his shaft. Whether her fingers meet I couldn't see. Then she put her other hand around the middle of his shaft before bending over and poking out her tongue.

Caressing his thick tip with her hot, wet tongue and down his shaft towards her hand Natalie then licks upwards again. With her lips over Dean's tip she opens wide and slides her mouth over his tip and takes a couple of inches of shaft inside her. Taking her left hand away Natalie edges further down Dean's shaft until she gags.

Pulling up she begins to suck him off and I feel my cock harden in my trousers. Natalie makes slurping noises as she sucks his cock whilst holding his shaft with her right hand. She pleasures him for quite a while before sliding her mouth off and breathing hard.

Remembering that I was there she turned to me and smiled then Dean asked what positions my wife enjoyed and Natalie replied - "All of them".

Usually we would do cowgirl or Doggy and occasionally missionary. Dean moved across the bed still on his knees and positioned himself between Natalie's legs. Then he lifted her right leg up revealing her slick swollen pussy presumably so I could see his cock going in.

Guiding it to her pussy Natalie asks - "Go slowly Dean". He smiles as his tip nudges against her then he begins to push. I see her pussy stretch so wide as his tip moves inside her and I hear Natalie moan in pain. I turn my gaze to her as she grabs the duvet and moans again. When I turn my head back towards her pussy I see Dean easing his shaft in.

With about half of his big cock inside her he gives Natalie a minute then still holding her leg up Dean slowly starts to thrust. - "Ohhh... Shitttt...you're so...big" she moans making me feel inadequate. Natalie moans from pain then pleasure as he fucks her slowly.

Her pussy lips slides back and forth over his thick shaft and as Dean begins to pick up the pace Natalie moans loudly. Her tits gently wobble with every thrust and before long she's trembling and when her body stiffens Dean stops thrusting as Natalie cums hard over his cock.

Groaning - "Fuuuuuck Fuuuuuck" she shakes with her orgasm.....

Natalie's out of breath and Dean waits before resuming. Her pussy now looser and his cock coated in her cum he's able to push further inside her. Thrusting for a while he then stops and says - "You ride me".

Dean carefully pulls out of Natalie making a plopping noise. He lays down as my wife moves on top of him. I stare at her soft curvy arse as she straddles him and guides his cock to her pussy. Then Natalie pushes downwards and letting out a moan his cock slides inside her.

My wife now impaled on Dean's cock she places her hands on his chest and begins to thrust up and down. Natalie moans as she rides his big hard on and I'm tempted to pull out my cock and masturbate however I had decided earlier I wouldn't toss off if I was aroused. The reasons being I didn't want them to know I was turned on and I didn't fancying displaying my cock in front of Dean and his large member!!!

Natalie speeds up and her arse cheeks quiver. Dean cups her tits and squeezes them making her moan loudly and after a few more minutes my wife's breathing hitches and I see her arse cheeks clench.

— "Fuuuuuuuuuuckkkkk" groaned Natalie as she cum all over his cock. Gyrating her crotch against Dean she tipped her head back in orgasmic pleasure...

To be continued...