Synopsis: Amy Carter is experiencing some feelings of frustration and stagnation in her life. In response, she adopts a policy of pushing her limits - sampling new foods, trying new activities, etc. In a similar vein, she begins to explore porn and fantasies with her husband, Ryan.

When on a weekend trip, they discover an adult store with a video arcade. Their fantasies pull them to explore this more, and in the process of pushing her limits, Amy and Ryan get in over their heads and make some risky decisions.

Preview:

“So, what do you want to watch tonight?” Amy Carter asked her husband, Ryan. The kids were asleep, the lights were down, the couple was naked in their bed, and the curvy blonde had opened an incognito browser window for the purpose of browsing porn.

Ryan still wasn’t quite sure what to make of his wife’s new pastime. They had been married for twelve years, and Amy had never before shown any interest whatsoever in porn. In fact, the few times it had come up, she had made some fairly derisive comments about it.

A few weeks ago, that all changed. Amy had come home from a lunch date with her sister, and she had asked Ryan about his porn preferences. At some point during their chat, Amy’s older sister Jen had mentioned something about masturbating to porn. The idea that women could actually enjoy porn had thrown Amy for a loop; she had literally never considered that women could fancy it. Ryan had been guarded in his response that day, but Amy’s query had been legitimate; she wasn’t trying to trip him up or gather ammunition for a fight. She genuinely wanted to know what sort of pornography got her husband’s motor running – apparently, she was largely trying to figure out a good starting point for her own explorations.

The result had been quite positive for their sex life. To begin with, Amy had been a little reserved, a little reluctant – but the first time that Ryan had slid his fingers to his wife’s crotch to find her panties hot and damp, he had realized that watching porn like this had unlocked something inside of her. She would watch, wide eyed and fixated on the action on screen, and she would spread her legs to Ryan’s touch without hesitation. In fact, for the past two weeks or so, if her husband wasn’t quick enough to start playing with her clit, Amy would take matters literally into her own hands, teasing her own little bud very soon after they settled on a video.

It wasn’t like the Carters had a bad sex life. Despite having been married for twelve years and having two children; they had sex two to three times on most weeks. Amy loved to receive oral and was usually amenable to giving it to her husband, as well. They took advantage of a decent variety of positions; Amy occasionally wore sexy lingerie on special occasions. Ryan knew that many couples were far worse off than his marriage when it came to sex, and he was thankful for what he had.

But ever since Amy had discovered porn, they were having sex more often. The blonde was more vocal, more intent on what was going on, was way more likely to initiate. And as for her rubbing herself off while watching a video… Ryan was flabbergasted, albeit in a good way. As far as he knew, Amy never masturbated; he had actually encouraged her to do so quite a few times, had bought various toys over the years to perhaps assist her – but to no avail. Despite his efforts, the toys seemed to remain entirely untouched except for the rare times that the two of them used one together, and Amy simply just did not touch herself.

Yet here she was tonight, openly rubbing her clit while staring at a decidedly amateur video of a middle-aged brunette woman sucking some guy’s cock in what appeared to be her bedroom. Judging from the wedding picture hanging above the bed in the video, the man was clearly not the brunette’s husband. Amy’s eyes were glassy as she teased her clit to the action on the screen; soon enough, the man in the video grunted as he ejaculated, and the brunette swallowed every drop of semen to the compliments of another man’s voice – presumably, her husband was both narrating and filming the action.

Ryan had shared with his wife his preference of watching real people have real sex; he had always despised professional porn. He found it to be boring, and Amy apparently either agreed or didn’t find his preferences to be objectionable. Most of their porn viewing seemed to be of real wives having real sex – often with men other than their husbands. Amy seemed to have a particular weakness for videos that seemed to be spur of the moment, contained sex acts that others might be able to see, or otherwise felt like they were risky or pushed limits.

As the woman on the screen smiled at her cameraman husband, the video came to an abrupt end. Amy groaned in frustration. “Just as it was getting good!” she exclaimed in an annoyed tone. Irritated, the blonde began to scroll the “related” video clips displayed beneath the video they had just watched. As she scrolled, she read the titles out loud.

“Slutty wife fucks guy after the party… wife and BBC at home… sexy milf sucks a stranger… naughty wife at the gloryhole,” she read. The last title caused Amy to scrunch up her face in a cute mask of confusion. “What the heck is a gloryhole?” she asked.

A jolt ran through Ryan as she made her query. He had always had a bit of a kink for gloryhole porn; the taboo of seeing some chick play with the cock of a guy she had never even seen before just did it for him. Cautiously, he answered. “A gloryhole is… erm… well… it’s a hole cut in a wall around waist height. Guys stick their cocks through them, so the person on the other side can suck them or whatever. They are found in adult video booths or in some bathrooms.”

Amy giggled and made an incredulous face. “Wait, seriously? Gross! How the hell do you know that?” She shook her head. “Never mind,” she stated. “That’s just so weird! Why would anyone want to play with some dude’s cock when they’ve never even seen the guy?”

Ryan kept his face carefully neutral; so much for the two of them enjoying that particular kind of porn together. Before he could respond, Amy had clicked on another video – this one featuring a milf on some boat at what looked like a lake – and was quickly back to rubbing herself again. Now was clearly not the time to argue over some rather niche porn. After all, the real benefit here wasn’t that Ryan could watch whatever porn he wanted to watch carte blanche; the real benefit was in getting his wife riled up from the onscreen action.

Amy rubbed herself to two orgasms that night before she couldn’t stand it anymore and demanded that her husband fuck her. Not being a fool, Ryan happily obliged.

Complete story post on Literotica: Pushing Her Limits

Technically, this isn't really a cuckold story, but that tag was as close as I could find.