In front of us, Abbie slowed her frantic bouncing on Paul’s pole and started to roll her hips more, letting his length stimulate the depths of her greedy cunt. She leaned back and supported herself on his knees with one hand, whilst running her other hand over her own body. Languishing in pleasure. Pinching her nipples, clutching at her neck, scratching her chest, rubbing her clit. Her legs spread wider and she treated Paul to the best show of his life.

She looked over at me with hooded eyes and I could see how drunk she was on lust and another man’s cock fucking her. When she focussed properly on me she moaned, and her mouth fell into a wide exhalation. I knew that had nothing to do with what she was doing, and was solely caused by the sight of me fucking Rosa from behind. Pride and jealousy and arrogance and petulance and euphoria all surged within me. I felt invigorated and invincible and began to pound ruthlessly into Rosa’s warm cunt. The slapping of flesh became louder and more visceral. I felt my balls start to sting faintly as they kept colliding with her pussy lips and clit. Rosa wailed and whined, struggling to support herself from my assault. With a moaning cry of “Ohhhh God!” her arms collapsed beneath her. She slumped and her head and chest fell down to the couch. She was no longer looking at her husband, no longer able to deal with what I was doing to her body. Vicious victory flooded through me and I grinned savagely.

“Oh fuck! That's right, baby, fuck her real good for me. She loves it. She loves your dick, baby.” Abbie’s burst of dirty encouragement was borne on ragged gasps of air. Rosa responded with desperate moans. She agreed, and it sounded like she was getting close.

“Mmmmmmm… Paul's dick is so good too. It's so deep. Fuck. Oh, baby, I love how you're fingering her ass too. I bet that feels so good. Listen to her. I think she's gonna cum on your dick, baby.”

Paul seemed to have been enjoying the commentary in his quiet way, but who wouldn't? He had a gorgeous woman writhing around on his dick and talking dirty about his wife being fucked next to him. He was red faced and sweating, but living the dream he could only have fantasized about until this point. But his head shot around to stare at us when he heard Abbie talk about my thumb up his wife's ass. He looked truly shocked. About as shocked as he'd been when Abbie started stroking him under the blanket. Masculine pride flooded my veins when I saw plainly that I'd gone where he hadn't dared to before, and his woman was loving it. It's the ugly, primal side of sharing, but I'd be damned if it didn't feel exquisite.

“Fuck… Fuck, fuck, fuck,” were Rosa’s thoughts on the matter. I felt her ass clench around my finger and shivers ripple through her. She reached out blindly in front of her, grasping unsteadily for her husband's hand.

“You're right. Fuck! I'm gonna… I'm gonna cum on this dick. Ohhhh, fuck, Paul. He's gonna make me cum again.”

Hearing that almost pushed me over the edge, but I ignored the exhilarating buzz pooling in my gut at hearing another man’s wife say that about me. I had to keep fucking her, and give her what she needed. Rosa pushed her ass back against me, and her words dissolved into continual moaning. Paul seemed to be having a similar reaction to me, if his sighs and groans were anything to go by. The two of them held hands as we rode them into orgasmic bliss.

Seeing how Paul twitched and his eyes almost rolled up into his head, I thrust deep inside Rosa’s intoxicating pussy and stayed rooted there. I loved that she had gone prone and stopped staring at her husband despite how much she clearly enjoyed it. I loved that her body had chosen to submit to both of our more primal needs and sensations. But she'd want to watch this. If they were truly childhood sweethearts, and this was their first real swap, then she'd want to remember this moment. I know she'd want to witness the first time her husband came with another woman since they'd been together, possibly the only other woman he'd ever had. I bunched her hair together with my spare hand and pulled firmly at it, prompting her to lift her head up and look forwards.

Abbie was just as attuned to what was about to happen as I was, and she bounced hard up and down Paul's long shaft. She popped off it entirely and then scrambled down to crouch low between his legs, taking his cock firmly in her hand, gleaming with her juices, and wanking him rapidly in her fist. The first spray of semen hit her chest and neck. She cooed in delight and directed his pulsating member to unload onto her tits after that, first coating one in ropes of cum, and then the other. Paul grunted and let her do what she wanted, he was powerless to resist, but probably had been dreaming about finishing exactly there since he'd first met her. Abbie smiled at him and then squeezed his dick tightly in her fist for a moment before engulfing it in her mouth. His wife and I watched as Paul's hips rose off the couch cushions and his back arched. I could see his cock pulsing still as Abbie milked the last drops of his seed directly onto her tongue. I experienced her ‘special finisher’ plenty of times myself, so I knew what overwhelming euphoria he was experiencing in that moment. It was still pretty special to watch.

Rosa seemed to agree, though perhaps for different reasons, and the tightening of her holes and the high pitched scream melding with her breathy moans told me she was about to orgasm again. Not letting go of her hair I resumed my deep thrusts into her. I felt her quiver and tremble against me. She clamped down on my cock and her whole body seized up before the storm of her own climax. The uncontrollable quaking of her limbs was dramatic and oh so sweet to witness. I felt like I owned her, and owned her orgasm. Or had gifted it to her. Her body tried to collapse completely, but I didn't let her fall away from me. I needed to be inside her.

I tried to stay still and let her fully recover, but I couldn't resist my own needs any more, and felt my balls constrict. I slid in and out of her pussy, knowing that I wouldn't last much longer. Her lips still gripped me tightly, even as she stopped shaking uncontrollably. The sensations were setting my entire body and soul on fire.

“Where should I finish?” I managed to pant out loud. It could have been Rosa's voice and brain being unsteady from the orgasm still pulsing through her, but I could have sworn she started to say ‘In…’ before taking another breath and directing me, “On my bum. Cum on my ass. Oh fuck, yes. Give it to me.”

The instinctive desire to bury myself into the depths of her wet fuckhole almost made me ignore her. But I managed to pull out in time to sandwich my cock in between her asscheeks and spatter her back and ass with my cum. Some of it reached her hair, and the white on black was a striking contrast. I marked her with my seed and watched it dool in her lower back and start to run down the curves of her exhausted body. Bliss overtook me at long last, and I stopped thinking entirely. All four of us just rested against one another and breathed.

A long time later I came back to awareness, and realised that Rosa was giggling at something Paul had said. They both sounded tired and drained, but something had amused them at least. I stepped back from Rosa, my softening cock leaving a streak across her asscheek where it touched her. I reached down and gently caressed her pussy as the three of them chattered happily. I tuned them out and simply basked in the afterglow. It wasn’t often that I’d experienced or witnessed such intense orgasms from at least 3 out of the 4 people. I felt a tiny stab of guilt that I hadn’t been paying attention to whether my girlfriend had actually climaxed yet, but shrugged it off easily. I know there would be plenty of opportunities to make up for it.

“Are you going to clean your husband’s cum off me?”

That sentence did cut through my reflective musings. Impossible to tune that out! Abbie was smiling, and shaking her chest and pushing her tits together. It almost looked like she was making a joke. Rosa hesitated but understood that it was anything but. She had her head resting on the backs of her hands, but she still managed to nod a few times.

“Mmm, okay.”

Abbie took her by the hand and both of us helped Rosa to her feet. She was a little unsteady, but she stood up straight and proud. Abbie’s smile turned a little more wicked than it had been before.

“Let’s get in the shower together, and see how long it takes for these dicks to get hard enough for round two.”

The two women’s hands wandered over each other as they walked out of the room. I didn’t hear what Rosa said when Abbie asked her if she’d ever gone down on another woman before. Paul and I watched them both disappear upstairs, the television reflecting the rivulets of semen dripping down Rosa’s back and legs. In a pure display of masculine openness we nodded at each other with wry smiles plastered on our faces. I offered my hand to him and pulled him to his feet, and then we followed the women upstairs to discover exactly how much Abbie could have corrupted Rosa in 20 seconds alone with her. We left Ben Affleck to his dramatic adventure. Poor bastard.