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"How long has it been?" your wife asks as her pussy hovers over the tip of your stiff cock.
"Weeks," you answer.
She drops her hips and you feel her heat and wetness engulf you for just a moment. You close your eyes, groan, and thrust your hips upwards, but the feeling is gone. She's pulled back. She's deprived you of her pussy.
"Do you want me?" she asks. "Do you want to fuck me?"
"Yes," you answer. "Please. More than anything." You're desperate. You feel like you're practically trembling with desire. Not only has it been weeks, but your wife has taken to teasing you on a daily basis, and when she's not teasing you she's making you lick her pussy or eat her ass, so you spend most of your time in an intense state of desire.
Again her wetness engulfs the head of your cock. Again you moan, but this time you maintain your discipline and you stop yourself from trying to thrust into her.
"It seems like you're a little too desperate," she says. "It seems like you might cum awfully quick if I let you fuck me now."
"No, please, just let me fuck you," you plead. "Just...please, don't deny me this."
She sinks down on your cock. Her pussy engulfs you. It's been just long enough that you almost forgot how good it felt to be inside her. You want to fuck her. You want her to ride you. All she's doing is sitting still, though. You're bathed in the wetness and heat of her pussy, but you're not yet enjoying that wondrous pleasure of actually having sex with her.
"You know what's going to happen if you cum too quickly?" she asks.
You shake your head.
"I'm going to make you eat your load out of me," she says. "I'm going to drag my pussy up your chest, sit on your face, and feed you every drop of what you leave inside me. Do you understand?"
You don't want to eat your cum out of her. Of course you don't. It sounds disgusting. It absolutely will be disgusting. You want to have sex with your wife, though. You've spent weeks in denial. You've spent weeks servicing her body in the most beautiful, thrilling ways. You've spent weeks being teased - in a way you find oddly arousing - about the notion of your wife fucking another man. You have to fuck her.
"Yes, I understand," you say.
Your wife smiles and leans forward. She slowly lifts her pussy off your cock and sinks back down again. She holds your gaze as your mouth opens to unleash a moan of pure, perfect pleasure. Her pussy feels amazing. It's hot and soaking wet and it feels tight around your shaft.
"Does my pussy feel good?" she asks while slowly taking you in and out of her body.
"Yes," you reply.
She smiles and rides you a little faster. She digs her fingernails into your chest and you wince at the pain, and yet you can't help but get a little more turned on. "Your tongue felt good in my asshole this morning," she says, recalling the rimjob you gave her in the shower while she masturbated. "You've become quite the expert at eating my asshole. Is that because you enjoy it?"
"Yes," you say.
"Yeah, you like eating your wife's tight little asshole? You like eating it even after I've been on a run and I'm all sweaty down there?" she asks.
You're still not sure why you like that so much, but you do. It remains a thrilling, kinky pleasure to have her come home from a run, order you to your knees, and then tell you to pull her leggings down to lick up every drop of sweat from her ass. "I love it," you answer.
Your wife leans down and rides you faster. She kisses your neck, moans, and asks, "And what about when I flirt with my new friend? What about when he texts me a picture of his big cock and I think about having it deep inside my tight little cunt?"
"Oh...fuck," you say as a very particular kind of arousal works its way through you. Your wife has done that a handful of times in the past few weeks and each time you find yourself brimming with an uncommon sort of desire, and each time you happily worship her pussy while she thinks about fucking another man, someone she's still only met in person a handful of times.
"You like that, don't you?" she asks softly. "You like that I fantasize about his cock filling my tight little cunt, don't you? You like that I want him to take me into the woods during one of our runs and fuck me up against a tree so I can bring home my messy, cum-filled pussy and feed it to you, don't you?"
That's the first time she's mentioned that particular twist on the fantasy and it leads to you having an overwhelming orgasm. You're a little bit embarrassed about how thrilling you find the idea, but the pleasure is more than enough to wash that sensation away. You fill your wife with your hot, sticky load and she sits up, puts her hands on your chest, and smiles.
"You know what you have to do now, right?" she asks.
You nod. "I do." You don't want to do it, but you know you have to. You know you agreed to it. "I have to clean my mess out of you," you say.
Your wife smiles. "That's right. You didn't come close to lasting long enough to make me cum, so you'll have to clean your mess out of me. Now open wide, baby."
She lifts her pussy from your cock and swiftly moves forward until her opening is just over your mouth. You open wide and she drops her pussy onto your face. You feel the first drops of cum hit your tongue. The taste is revolting, and yet there's something quite pleasurable about your wife sitting astride your face with a gleeful smile.
"Put your tongue inside me," she says, "Eat your fucking load out of me. Eat all of it."
You're not sure why, but the revulsion you expected to feel never arrives. Instead, you feel an odd sense of pleasure at doing what your wife wants. It feels good to put your tongue inside her. It's thrilling to fish your load out of her pussy and swallow it. Even better, she can't seem to stop moaning, which makes it all so much more exciting.
Your wife reaches down and grabs a handful of your hair. She seizes control and for some reason it makes you moan. Her grip is tight and it feels good. She begins to ride your face, moving her hips back and forth and grinding her pussy over your lips, nose, and chin. She's making an absolute mess of your face and you're enjoying it.
Your wife has an orgasm. She doesn't say a word. She simply cums on your face. Juices and some of your cum drip out of her. You lick up what you can and you let the rest of it remain on your face as her moans fill the bedroom.
When she's finished, your wife releases her grip on your hair and slides back until she's sitting across your stomach. She laughs as she studies your face and says, "I made such a mess of you. You look like you were just in a porn video. I like it, though. It shows your dedication. You made a promise and you followed through on it. That's a very good thing."
"I hope it's not too weird to say that I enjoyed all of that," you reply.
"All of it?" she asks.
You nod. There's no sense in lying. Why not embrace what's obviously your reality? "Yes, all of it."
"I'll keep that in mind," she says.
You're not sure what's going to happen next, but you can't wait to see what sort of naughty ideas your wife has in mind.

Your wife's face and chest are flushed red when she returns home from her run. Her hair is matted with sweat and her taut stomach glistens. It looks as though she worked extra hard today.
"Good run?" you ask.
She smiles. "It was exceptional." She stands at the edge of the living room - which you've been dutifully cleaning while she's been out exercising - and leans against the wall. There's something about her sweaty post-workout look that you find utterly irresistible. "I'm awfully sweaty, though. Would you be willing to help with that?"
You thought she'd never ask. You drop your cleaning tools and approach your wife. She pushes away from the wall and you drop to your knees in front of her. She reaches out and runs her fingers through your hair before pulling you close until your face is pressed against her crotch. You kiss her pelvis through the thin, damp material of her astoundingly sexy leggings and then look up.
"Clean the sweat off my stomach," she instructs.
Your lips find their way to her taut, smooth stomach and you kiss and lick up every drop of sweat, all while she runs her fingers through your hair in a manner that feels remarkably tender.
"Do I taste good?" she asks.
"You taste perfect," you reply as the salt of her sweat dances on your taste buds.
She smiles, steps back, and bends over for a soft kiss on the lips. Then she stands and turns around. Her ponytail sways in a particularly fetching manner before she says, "Clean the sweat from the small of my back."
You lick up every drop of sweat you can find, all while thinking about the moment when your wife tells you to pull her leggings down and clean her sweaty ass.
"What would you like to do now?" she asks playfully.
"I want to lick your ass clean," you answer. "I want it so badly." You want it badly enough that your cock is stiff at the prospect of being allowed to spread her flawless ass cheeks and press your face between them.
Usually your wife lets you pull her leggings down, but today she slips her fingers into the waistband and lowers them just past the bottom of her beautiful ass cheeks. You stare the milky white flesh and then lean forward and press your lips against it. Your wife moans and you slowly plant a series of kisses on her sweaty ass. You use your tongue to lick up everything you can find, soaking up the sweat that resulted from her hard work on the running trail and your dick throbs with delight as you do so.
"I want to feel your tongue on my asshole," she says. "Right now."
You spread your wife's ass cheeks and press your face between them. You lick her asshole and she moans. You do the same. You've come to find an intense, almost overwhelming kind of pleasure in doing this. She puts a hand on the back of your head and applies pressure, smothering you with her ass while you tongue her hole. You even manage to penetrate her a little, tasting her insides and reaching down to grasp your cock through your shorts while do so, for now you're completely lost in the pleasure of rimming your wife after a particularly sweaty run.
When she's satisfied, your wife pushes your head from between her ass cheeks. Usually, this is the part where she pulls her leggings up and goes on with her day, leaving you sexually frustrated but gleeful that you've gotten the chance to eat her hole.
Today is different, though. Today she pulls her leggings down to her knees and bends over, exposing her pussy lips. They look wet and enflamed with desire.
"Would you like to taste my pussy?" she asks.
"More than anything," you reply.
"Go ahead, put your tongue inside me," your wife says.
You lean forward. You press your face between her ass cheeks and upper thighs. You put your tongue inside her. You taste her, but it's not the taste you're used to. You can't quite put your finger on it, but she tastes different.
"How do I taste?" she asks.
"Different," you say.
"Do you like it?" your wife asks. "Do you like how my pussy tastes today?"
"I do," you answer.
"Taste me again," she instructs. "Put your tongue deeper inside me this time."
You return to her pussy. You put your tongue as deep inside her as you can. You wiggle it around. You sample the wetness of her flesh. You bathe your tongue in her pussy. The taste is stronger. It's vastly different from usual. It's a mixture of salty and sweet.
"It's not just me you're tasting," your wife says as she puts a hand on the back of your head and applies strong pressure. "You're tasting him, too."
You're not sure what that means, but you feel a sense of panic wash over you and you try and escape from her pussy. Your wife grabs a handful of your hair and pulls hard enough that a rather intense kind of pain runs down your spine.
"Don't fight it," she says. "Just taste it. Taste my pussy. Taste him in my pussy. Put your fucking tongue inside me and taste him."
Her grip on your hair is painful enough that you stop fighting to escape. You put your tongue inside her. You're now almost certain she got fucked while on her run, but you don't want to believe that you could actually be tasting another man's cum. You don't want to believe your wife would surprise you with something so dirty.
"He tastes good, doesn't he?" she asks. "Drink him out of me. Use your tongue to find everything he left inside me."
You moan into her pussy, but you're not sure why. Part of you is panicked at what you're doing, but part of you is turned on. Your cock is still hard. It even feels like you've leaked a bit of precum into your underwear.
"He took me into the woods," she says. "He put me up against a tree. He pulled my leggings down. He slipped his cock into me from behind. He fucked me. He fucked me hard. He stretched me out with that gorgeous cock of his. He pulled my top over my tits and he had them in his hands as I came all over his fat cock. I screamed. I screamed like a woman who hadn't been fucked like that in a long time."
Your hand moves between your legs as if guided by its own mind. Your fingers find your cock and stroke it through your shorts. You moan into your wife's pussy as she makes it perfectly clear that another man was inside her before your tongue entered her.
"I told him to cum inside me," she continues. "I told him to cum in my fucking pussy. I told him I'd make my husband lick his load out of me when I got home. That put him over the top, baby. He came the moment I said it. He came while thinking about you doing what you're doing right now. He came while thinking about you getting on your knees and eating his fucking load out of my cunt."
You're shockingly close to an orgasm as you jerk off through your shorts. You can't believe it feels so good, that you're so turned on, and yet it does. It feels astonishingly good.
"Are you jerking off?" she asks.
"Mmm hmm," you say as your tongue continues to explore her pussy.
"You can cum if you want," she says. "But do it in your shorts."
She releases her grip on your hair but you don't pull away. You push your tongue deeper into her pussy. You taste the saltiness of his cum. You feel the thick, viscous fluid he left inside her in your mouth. Your wife moans and you feel her rubbing her clit.
You cum in your shorts. You cum so hard it feels like your entire body is trembling. Your tongue remains inside her as you feast on the salty mess someone else left in her pussy. You pull away only after you've enjoyed your orgasm. There's a hot, sticky mess in your underwear, but you don't care, as the entirety of your body is engulfed in pleasure.
Your wife cums too. You see juices drip out of her pussy. You lean in and lick them up despite just having had your orgasm. You don't know why, but it feels good to do so.
She pulls her leggings up and spins around. "I told him I'd be running at the same time tomorrow. You're welcome to join me if you want."
She just invited you to watch another man fuck her. You're almost certain you're going to accept her invitation.