A Swingers Swap with a Humiliating Rule

Marina and Lucía had always been inseparable. They were only a year apart, and since they were girls, there had been no secret one kept from the other. They grew up sharing everything: clothes, friends, first heartbreaks. As adults, married each to her own husband, that habit never broke. They simply changed the subject.

Marina, the elder one, spoke without shame about how well her husband, Diego, handled things. She said he had a big body, firm hands, and a way of taking charge that left no room for doubt. That in bed he was the one in command, and she liked that more than she was willing to admit out loud.

Lucía, on the other hand, sighed every time the subject turned to Tomás. Her husband was attentive, sweet, incapable of raising his voice at her. What he lacked in initiative he made up for with patience and with a tongue he did know how to use.

—You’re lucky to have Diego —Lucía said one afternoon, stirring her coffee—. In five years of marriage, Tomás has never managed to make me come the way I’d like. He tries, poor thing, but it’s not the same.

—Don’t think it’s all perfect —Marina replied—. Diego is selfish in his own way. He’s so convinced his body is a gift from heaven that he almost never bothers to give me pleasure with his mouth. He gets there, does his thing, and that’s it.

—Well, sometimes I wonder what it would feel like with a man like that —Lucía admitted, lowering her voice even though they were alone—. Tomás is the only one I’ve ever known. I’ve never tried anything else.

Marina set her cup on the table very slowly. The idea was already in her head, rounded and complete, before she even finished saying it.

—I have a proposal —she said, holding back a smile—. What if we swapped for one night? I never told you this, but Diego has commented more than once that he wouldn’t mind being with you. And I very much doubt Tomás would turn down an opportunity like that.

Lucía opened her mouth to protest, but nothing came out. Curiosity weighed more than scandal.

***

That same night, Marina brought the matter up with Diego. He, true to form, agreed at once. But he laid down a condition that made it clear the swap would be on his terms.

—Fine, but there’s one detail —he said, stretched out on the bed, with that calm that made Marina’s skin prickle—. I’ll take care of your sister the way she deserves. Tomás, however, won’t touch her with anything but his tongue. No fucking. He’ll stick to what he knows how to do.

—Seems fair to me —Marina answered, amused—. From what Lucía says, he wouldn’t notice much difference anyway. In fact, if you want, we can make sure. I understand there are chastity cages for men. It would be… educational.

Diego laughed heartily. He loved the idea.

On the other side of the city, that same night, Lucía had her own conversation. She explained the full plan to Tomás: the swap, Diego’s condition, the cage, the fact that he would only be allowed to use his mouth.

—That isn’t fair —Tomás complained, more hurt than angry—. He gets to be with you for real and I only get to lick your sister.

—I’m sorry, darling, but that’s the deal —Lucía replied with a firmness that surprised even herself—. Besides, I’m going to let Diego do whatever he wants to me, in every way he can think of. So you can settle for tasting Marina. It’s something.

Tomás lowered his gaze. He had no argument. And deep in that surrender, there was something he didn’t dare name, something that made his pulse race faster.

***

The plan was set for the following Saturday. The four of them would have dinner at Lucía and Tomás’s house, and at the end of the evening everyone would leave with the partner assigned to them that night.

Diego arrived in an excellent mood. He complimented Lucía on how she looked, brushed her waist as he passed, and at one point gave her backside a playful slap while Tomás watched from the kitchen, not knowing what to do with his hands. The gesture said it all: that night, Diego felt like he owned the place.

They had dinner, drank a couple of glasses of wine, and washed the dishes. The conversation grew denser, charged with glances that no longer bothered to hide anything. When silence fell, the two sisters exchanged a conspiratorial smile. The moment had arrived.

—Well, Tomás —Lucía said, standing up—. You know what comes next. Strip.

The humiliation began there, in front of everyone. Tomás obeyed, his cheeks burning, and it was Diego himself who insisted on putting the cage on him. It was a small plastic sheath that closed over the penis with a tiny brass padlock. Tomás stood in the middle of the living room, hands clasped behind his head and eyes forward, while the other man fitted the device on him in full view of the two women.

—This will take away your appetite for mischief —Diego teased, slipping the key into his trouser pocket with calculated slowness—. Not that you could do much anyway, but better safe than sorry.

And with that, still laughing, he took Lucía by the hand and led her upstairs.

***

Tomás was left alone with Marina, more nervous than he had ever been in his life. She looked him up and down, savoring the power that had just fallen into her hands.

—Put this on —she said, taking several garments out of a bag. They were women’s clothes: a black bra, matching panties, stockings, and a garter belt.

—But… that’s women’s clothing —he stammered—. Why do I have to wear it?

—Because you’ve never been able to satisfy my sister —Marina replied, not losing her smile—. And because tonight you’re going to do what I say. Put it on.

Red with shame, Tomás obeyed. He slipped into the bra, the panties, the stockings held up by the garter belt, and even a pair of high heels that pinched uncomfortably. Each garment pushed him a little further down, and yet he could not find in himself even a shred of will to refuse.

Marina, to reinforce her dominance, cuffed his wrists behind his back. Then she clipped a collar around his neck and tugged the leash to test the tension.

—Much better —she murmured, satisfied.

She sat on the sofa, lifted her skirt, and slid her panties down with exasperating calm. She had a neatly trimmed pussy, framed by stockings almost identical to the ones he was wearing. Neither of them missed the irony.

—Don’t just stand there with your mouth open —she ordered, giving the leash a sharp yank—. Kneel and lick it. Now.

How humiliating this all is, Tomás thought as he dropped to his knees on the rug.

There he was, dressed as a woman, bound and kneeling, paying tribute to his sister-in-law’s pussy while his own wife was being taken upstairs by another man.

***

Tomás could barely concentrate on what he was doing with his tongue. From the bedroom came an uproar impossible to ignore. The bed slammed against the wall with a brutal rhythm, and Lucía, who had always been quiet in intimate moments, was screaming in a way he had never heard in five years.

He stopped for a second, alarmed.

—I think he’s hurting her —he said.

—Don’t be an idiot —Marina barked, pressing his head back against her sex—. Don’t you recognize a woman’s screams when a real man is fucking her? Keep working.

Tomás went back to his task. He licked slowly, carefully, feeling Marina grow wetter and move against his mouth with more and more impatience. Above them, the mattress springs howled without pause.

—Just like that, exactly like that —Marina panted, digging her nails into the back of his neck—. Harder. You have to be good for something.

—Yes… yes… don’t stop! —came from upstairs, Lucía’s voice broken by pleasure.

And then something almost absurd happened: the two sisters came at nearly the same time. Lucía, riding on Diego’s body; Marina, shuddering against the tongue of a man dressed in the same lingerie as hers. The whole house filled with their moans, and then, all at once, fell silent.

Tomás finally pulled his face away from between Marina’s thighs. His chin was wet and his breathing ragged.

—Get up —she ordered, recovered now, tugging the leash toward the stairs—. You still have work to do.

***

With his legs trembling from the position and from nerves, Tomás followed Marina to the bedroom. When he crossed the threshold, he found the scene he had spent the whole night imagining without daring to do so: his wife lying on the bed, legs open, her body shining with sweat and the obvious mark of what had just happened.

—Clean her up —Diego said from the headboard, in a tone that allowed no argument.

—Come on, where are your manners? —Lucía added, still breathless—. You haven’t even thanked Diego for taking care of me the way you can’t.

—Thank you —Tomás murmured, almost voiceless.

—Thank you, sir —Marina corrected him, tightening the leash.

—Sorry… thank you, sir —he repeated.

More submissive than at any other moment in his life, Tomás climbed onto the bed and positioned himself between his wife’s legs, which wore stockings almost twin to his own. He leaned in and began to lick that sex he had kissed so many times before, only tonight everything was different and he knew it perfectly well.

—You’d better get used to it —Diego said, watching him with a crooked smile—. From now on, this is going to be your thing.

—Yes, my little husband —Lucía added, stroking his hair with a tenderness that hurt more than any insult—. From now on, Diego is in charge of me. You’re good for this, and only this. Understand?

—Yes, ma’am —Tomás replied.

And as he kept fulfilling his new function, he heard the two sisters start talking between laughs about the next time, as if all of it had always been this way. For the first time in a long while, Tomás knew exactly where he stood. And the most disturbing thing of all was that he was no longer sure he wanted to escape it.