We Swapped Partners with My Best Friend on the Beach

The sun was beating down hard on the coast and the sand burned to the touch. We’d spent the whole morning on the beach, the four of us, sharing an umbrella, a cooler, and conversations that, for the first time in years, were beginning to drift into less safe territory.

Martín suddenly sat up and brushed the sand from his hands.

—I’m going to get another beer —he said—. This one’s already warm.

I watched him from my towel, still lying on my back. He held the almost empty can up like it was irrefutable proof. Ignacio —that was what he had called me since I was seventeen, and what he still called me thirty years later— was the one who hesitated. Martín was the one who decided.

—I’ll go with you —I said.

For a moment we both looked toward the water. Lucía and Renata had gone in farther than usual, almost to the buoy, and from where we were they looked like two floating heads, one dark-haired and one blonde, laughing at something we would never know. My wife and my best friend’s wife, talking to each other with that closeness that didn’t need witnesses.

—We won’t be long —I murmured, more to myself than to anyone.

Martín was already on his feet.

—I don’t think they’ll miss us.

We walked across the sand toward the beach bar with that relaxed pace of people who are in no hurry but do have an intention. The sign, written in crooked letters on an old plank, read: “Chiringuito Ernesto.” It was a weathered wooden place open to the sea, with two ceiling fans turning lazily and a counter stacked with cold glasses and little bottles just pulled from the ice.

—Two ice-cold beers —Martín ordered as soon as we crossed the strip curtain.

The bartender nodded without saying a word. A man in his early sixties, dark-skinned as only a lifelong coastal man can be, with a dark shirt stuck to his body by the heat and the calm gaze of someone who has watched too many other people’s summers go by. His name was Ernesto, as the sign said and as the small embroidered tag on his chest said too.

—Coming right up —he replied, and buried his hands in the ice.

He set the little bottles down in front of us. The glass was sweating in the hot air.

—Here you go.

Martín took a long swallow, almost immediately, and closed his eyes for a second.

—Now that’s better.

I drank more slowly. I rested my elbows on the counter and glanced toward the beach. From there we could still see them. Little figures amid the motion of the water, oblivious to everything Martín was starting to turn over in his head.

—They’re not bad —he said suddenly.

I didn’t need to ask what he meant.

—They’ve never been bad —I answered.

Martín smiled.

—But today…

He let the sentence hang there, waiting.

—Today is different —I finished for him, without looking at him.

He nodded.

—The context.

I laughed softly.

—There you go again with that.

—Because it’s true, Ignacio —he insisted, turning his body toward me—. Here, everything looks different.

I took another drink.

—Or it allows you to see it differently.

He looked at me with renewed interest.

—Exactly.

There was a brief pause. The ceiling fan squeaked. Farther away, on the other side of the beach bar, an elderly couple was playing cards. No one paid us any attention, except Ernesto, who pretended to arrange glasses behind the counter.

—Have you noticed Lucía’s swimsuit? —Martín asked.

I didn’t answer right away. Of course I had noticed. My wife had bought the bikini the week before, a black two-piece with ties at the hips and a top that, frankly, seemed made to hint rather than cover. I’d watched her put it on that morning in front of the mirror, watched her turn to look at herself from behind, watched her smile. Her nipples showed beneath the black triangle, hard from the room’s air conditioning, and the fabric barely covered the areola. Her ass, round and firm for her forty-something years, was almost fully on display because the bottoms were a barely disguised thong.

—Yes —I said.

Martín set his bottle on the counter.

—That bikini is no accident.

I narrowed my eyes, as if reconstructing the image.

—No.

—She knows exactly what she’s doing.

I didn’t deny it. Lucía had always been like that: self-aware, measured, slightly provocative when it suited her. And lately, with Martín around, it suited her.

—She’s always known —I admitted.

Martín let out a small laugh.

—And Renata…

I turned my head toward him.

—What about Renata?

He shrugged.

—She doesn’t seem like it at first, but she does too. What a woman you’ve got, sorry to say it.

I frowned for a second, more out of reflex than annoyance.

—Fuck, you really are direct —I exclaimed, trying to hide a certain unease. But it was Martín, my friend since university, the godfather of my eldest daughter, the guy who had helped me through three moves and two breakups. What was I supposed to do?

Silence settled for a second. I took a longer swallow this time. He leaned slightly toward me, lowering his voice a little, though with no real intention of hiding it.

—Don’t you think Lucía knows how you look at her?

I held his gaze.

—I suppose Lucía always knows. She’s too perceptive.

Behind the bar, Ernesto let out an almost inaudible sigh. He didn’t intervene, but I noticed him raise an eyebrow. He had heard fragments and he wasn’t pleased. I would’ve reacted the same way, I suppose.

—I’m going to tell you something —Martín went on, with the looser tone that comes with the second beer—. I think we’re being too… polite.

I set the bottle down on the counter.

—Polite?

—Yes —he repeated—. All looks, all silences, all…

He made an indistinct gesture in the air with his hand.

—…contained.

I gave him a half smile.

—Not everyone works like you do.

He laughed.

—No, of course not.

He leaned a little closer. I could smell beer on his breath and also the coconut sunscreen Renata had rubbed on his back that morning. The world had shrunk to that counter and that conversation.

—But tell me you haven’t imagined…

He stopped, searching for the words.

I watched him.

—What?

He smiled, half provocative, half casual.

—What all this would be like… without so much filter.

I didn’t answer right away. I looked out at the sea again. The waves, the distance, the two figures moving in the water. I thought of Renata and her blonde hair stuck to her neck when she came out of the sea, of the big tits bouncing as she ran across the sand, of how the white bikini went see-through when it was wet and outlined her dark nipples. I thought of how Martín had been looking at Lucía for months, without hiding it, every time the four of us got together, and of how Lucía got nervous when he showed up, how she crossed her legs differently. I thought of the conversations Lucía and I had had in bed, in the dark, when she asked me whether I had ever fantasized about watching, about sharing, about trying, while I fucked her with my hand and she whispered in my ear that she wouldn’t be able to say no either if it ever happened.

—I’ve imagined it —I said at last.

Martín nodded, satisfied.

—Of course you have.

Ernesto cleared his throat on the other side of the counter.

—Another round? —he asked, in a neutral tone that tried to hide some discomfort.

Martín lifted the empty bottle.

—Yeah, go on.

I nodded. Ernesto served the beers without commenting further, though his expression said enough.

—There are things —he murmured as he set the bottles down— that are better not thought about too much.

Martín looked at him, amused.

—Oh, really?

Ernesto shrugged.

—Or at least… not said out loud.

I let out a faint laugh. Martín, on the other hand, raised his beer toward him.

—We’re the kind who talk.

Ernesto shook his head, half smiling.

—So I can see.

He walked away a few steps, leaving us alone again.

***

We went back to the beach with the beers in hand and a half-finished conversation weighing between our fingers. Lucía and Renata had already come out of the water and were lying on their towels, drying off in the sun. Lucía had untied the top of her bikini and was holding it against her chest with one arm, but not very firmly; the swell of her breast was visible, and whenever she moved, a dark nipple peeked out and then hid again as if it were teasing us. Renata, lying on her stomach, had lowered her straps to avoid tan lines, and had also unfastened the top, leaving her entire back bare and her tits flattened against the towel, so big they spilled out on both sides.

—Look who’s back —Lucía said without lifting her eyes—. The explorers.

—We brought beers —Martín announced.

—Better than you —Renata added, and I knew, just from her tone, that something had changed between them too while we were gone.

We lay down on our towels. The silence was thick, complicit. Lucía ran a hand through my hair, as she always did, but this time she kept it there longer than usual, and I had the impression that Renata was watching her.

—What do you talk about at the beach bar? —Renata asked after a while, without opening her eyes.

Martín answered before I could.

—Everything. And nothing.

—How lazy —Lucía said, and this time she did turn her head toward him. She smiled. The arm holding up the top loosened for an instant and one breast was fully visible for a whole second before she covered it again. Martín didn’t look away. Neither did I.

Renata propped herself up on her elbows. Her bikini shifted a little, and neither of us, Martín or I, could avoid looking at the dark nipples appearing beneath the loosened fabric.

—We’ve been talking too —she said, and looked at Lucía.

—Oh, really? —Martín asked, with too-obvious interest.

Lucía nodded slowly.

—About you two.

—Good things or bad things? —he asked.

—Interesting —Lucía replied.

And that one word alone, that adjective chosen with all the intention in the world, was enough for the four of us to understand, at the same time, that the afternoon was going to be long. And probably the night too.

***

Dinner was on the terrace of the apartment the two couples had rented together. Grilled fish, salad, cold white wine. Lots of cold white wine. There was a candle in the center of the table and the air smelled of sea and jasmine.

Renata was wearing a light cream dress, with no bra underneath. Her tits bounced with every gesture and her nipples showed through the thin fabric. Lucía had put on a short black dress I knew well, because it was the one she wore when she wanted something. The neckline went almost to her navel. Martín and I wore open shirts and by then we weren’t even trying to hide anything anymore.

—Who’s pouring more wine? —Renata asked.

—I will —I answered.

I stood up and went around the table. When I filled Renata’s glass, she brushed my wrist with her fingers.

It wasn’t an accidental gesture.

Lucía, on the other side of the table, didn’t miss a thing.

—Thank you, Ignacio —Renata said—. You serve very well.

—I’ve had years of practice —I replied.

I went back to my seat. Martín had one hand resting on Lucía’s thigh beneath the tablecloth. I don’t know whether she had said something or whether he had started it, but the hand was there, still, and Lucía hadn’t even blinked. I saw that hand slowly moving upward, saw the hem of the black dress wrinkle at her hip, saw Lucía part her legs a little to make room. Her breathing caught just slightly, but I know her: I could tell Martín already had his fingers between her legs, over the crotch of her panties, and that she was drenched.

The four of us looked at one another. And suddenly I understood that the conversation at the beach bar hadn’t been the beginning of anything, but the end. The end of a whole decade of looks, silences, and things held back.

—Well —Martín said, raising his glass with his free hand—. Shall we toast?

—To what? —Lucía asked, her voice a little rough.

He looked at her. Then he looked at me.

—To the context.

The four of us clinked glasses.

***

What happened after that I remember in images, not in order. Lucía on the sofa, laughing with Martín while he slipped one finger under the dress strap and pulled out a whole breast, how he bent down to lick it without ceremony and she moaned for the first time with another mouth on her nipple after twenty years. Renata leaning against me on the balcony, kissing me slowly, with the taste of white wine still in her mouth, my tongue between her lips and her hand going straight down to grab my cock over my pants, sizing it up without shame. My own hand sliding down her back, finding bare skin under the dress, lifting her skirt, discovering she wasn’t wearing panties, that her cunt was already wet and hot and that she spread her legs so I could put two fingers in right there, against the railing, with the sea behind us. Lucía laughing again from inside, but this time different, deeper, a long pant followed by a “like that, fuck, like that” I had never heard her say to anyone but me.

At some point Renata took my hand —the same hand I had just used to pull my fingers out of her cunt, shining with her juices— and led me to the bedroom. Not ours, the one I shared with Lucía, but theirs. The bed was big. The light was low. She took off her dress without any hurry and I stayed watching her like someone looking at something long imagined and finally present. She was completely naked, her big heavy tits hanging naturally, dark erect nipples, a slightly rounded stomach, a trimmed blonde mound in a narrow strip, and between her parted thighs the wet gleam of a cunt that had been waiting for this for months.

—Are you sure? —she asked me.

—Yes.

—And Lucía?

I turned toward the half-open door. From the hallway came the sound of my wife’s laughter, Martín’s murmur, a low moan I knew too well, and then the unmistakable sound of a cock entering a wet cunt and Lucía’s muffled “ah, fuck” . He was fucking her on the sofa. I could hear her coming in a way I had never made her come.

—I think Lucía’s sure too —I answered.

Renata kissed me again, hungrier this time. Her hands unbuttoned my shirt with a patience I hadn’t imagined she could have, and she pulled it off my shoulders. She undid my belt, yanked my pants and underwear down in one motion, and knelt in front of me without a word. My cock sprang up hard, pointing at her face. She looked at it for a second with narrowed eyes, smiling just a little.

—You’ve got a nice one —she said—. I figured as much.

And she took the whole thing into her mouth in one movement, all the way down, until I felt her throat squeezing my head. I grabbed her blonde hair with both hands, without meaning to, and she started sucking me slowly and expertly, going up and down, taking my cock all the way out and swallowing it again, licking underneath, sucking my balls one by one while she worked me with her hand. Saliva dripped from her chin. She looked up at me from below, her lips stretched around my cock, and that image —my best friend’s wife on her knees sucking my dick— brought me to the edge in less than a minute.

—Stop —I told her—. You’re going to make me cum.

She pulled it out of her mouth with a pop and smiled.

—Not yet.

She got up, pushed me onto the bed, and climbed on top. Her strength surprised me. She didn’t hesitate for a second: she grabbed my cock with one hand, positioned it at the entrance to her cunt, and slowly lowered herself onto it, impaling herself all the way down with a long, deep moan that came from the bottom of her chest. I felt her close around me, tight, hot, soaking wet, and for a moment I didn’t know if I’d last more than three thrusts.

—Fuck —she muttered, still for a few seconds, adjusting herself—. Fuck, that feels amazing.

She started moving. Slowly at first, riding my cock with her hands on my chest, her tits swaying in front of my face. I grabbed them. Squeezed them. Took one nipple into my mouth and she threw her head back with a moan. She rode like she’d been born for it, with her own rhythm, biting her lip, and every time she came down she took me all the way to the hilt and made that little circle with her hips that left me breathless.

We were surprised by how easily we fit together, as if we had been rehearsing it without knowing it, at every Christmas dinner, every birthday, every shared vacation.

—Don’t make any noise —she whispered.

—Why?

She smiled against my neck without stopping.

—I want to hear her.

And I did too. And Renata knew it. And I knew that she knew.

We both stayed quiet, listening. From the living room now came a clear rhythm, the thud of one body against another, Lucía’s increasingly sharp “yes, yes, yes,” Martín’s “like that, you slut, like that,” and beneath it the creak of the sofa. Renata stopped moving for a second, looked me in the eyes, and whispered:

—He’s fucking her well.

—Yeah.

—Does that turn you on?

I nodded, wordless. She smiled and started again, faster this time, riding me hard, dropping her full weight onto my cock with every thrust. I grabbed her ass with both hands, spread her open, shoved a finger, wet with her own saliva, into her asshole, and she let out a moan she could no longer hold back.

—Swap us —I begged her—. I want you on all fours.

She laughed softly and obeyed. She climbed off me, got on her knees on the bed, ass lifted up, back arched, face resting on the mattress as she looked at me from the side. Her cunt gleamed, open and pink, with my juices and hers mixed together running down the inside of her thigh.

—Break me —she said—. I’ve spent a year imagining this cock.

I knelt behind her, grabbed my dick, and drove it into her in one thrust to the balls. She let out a muffled cry into the sheets. And from that moment I didn’t stop. I fucked her hard, gripping her hips, watching my cock go in and out shiny with her cunt, watching her ass tremble with every blow, watching her stay on all fours and beg me “more, harder, fuck.” I slapped one cheek and my fingers left a red mark. Another. And another. She came with that, clamping down on my cock in spasms, biting the pillow so she wouldn’t scream, or maybe so she could scream softly enough for Lucía to hear.

From the living room came my wife’s cry as she came, a drawn-out “I’m coming, I’m coming, Martín,” almost a complaint, and it hit me that the four of us were synchronized without having agreed on anything, fucking in different rooms to the same rhythm as the sea outside.

—Come inside me —Renata begged, gasping, turning her face to look at me—. Inside, Ignacio. Let her tell Lucía later.

I couldn’t hold out for three more thrusts. I drove my cock in to the hilt, grabbed her by the hair and yanked her back, and came inside her with a long grunt that rose from my gut, filling her with spurts of cum while she clenched around me and moaned with each wave. I felt my load spill between our bodies, felt it running down her cunt and along her thighs, felt her keep rocking her ass against me to squeeze out the last drop.

We collapsed together on the bed, sweating, breathing hard. She turned and found my mouth, kissing me slowly, my cock still softening inside her. In the hallway, a door opened and closed. Lucía’s bare feet. A murmur, her laugh. The bathroom door. And then, again, the silence of the apartment, broken only by the sea.

Renata ran her tongue over my lower lip.

—We’re not done yet —she whispered.

—I know.

***

The next morning, the four of us had breakfast on the terrace as if nothing had happened. No one mentioned the night before. Lucía poured me coffee and kissed me on the forehead. Martín passed the jam to Renata. The sun was falling just like it had the day before, the same seagulls, the same smell of sea.

But when I stood up to get more coffee, Renata looked up and held my gaze a second too long. Lucía saw it. And Martín too.

And the four of us smiled without saying a word, because we knew that at eleven we’d go back to the beach, and at one Martín would again suggest going to Ernesto’s beach bar, and at three someone would go down to get water, and that nothing that had begun yesterday was going to end any time soon.

—More coffee? —Lucía asked.

—Please —I replied.

And she smiled at me as if she were meeting me for the first time.