I wasn’t quite phoning it in. Not yet. But I could feel myself slipping after five years of marriage to Beth. We still very much loved each other. We still had sex and did it at a respectable rate. But things had gotten slowly tamer as time wore on. In our first years, we’d carried on like when we were dating, doing every act, position and variation under the sun. We both had boundless carnal energy.

Now, not so much. A straightforward screw was more our current speed. Nothing too strenuous; nothing too tricky. When was the last time we did anal? I couldn’t say.

The same subtle lethargy was also starting to seep into other areas of my life. I was still in good shape — but not great shape anymore. I missed the fit form I used to have. I wanted it back. My physical state, at least, I could do something about immediately.

Beth still hit the gym. She had a trainer at a neighborhood spot, a guy named Donovan, who I’d met. Nice dude, very good at his job.

When I went to him and said I wanted to tone up, he slotted me right into his schedule. His was a thorough workout, but I didn’t complain once — not even when I went home with an aching body. It was worth it, I told myself. Relatively quickly, my muscles were regaining their tautness, and I felt my stamina improving.

After a few weeks of this I took Beth to bed, anticipating a night of old-style lovemaking. Memories of our previous sexual antics played vividly in my mind. But when we got down to matters, it was more of our new same-old. Pragmatic sex. I couldn’t seem to remember how to initiate our old acts. I got embarrassed. We finished it out, and it wasn’t any kind of disaster. But… I had wanted more.

At my next session with Donovan, he could see I was troubled. By that point, we were tight enough that he took me out for a beer after the gym closed.

He was one of those people I felt I could open up to. I didn’t pour it on all at once, and he didn’t try to coax anything out me. But on my second beer, I was telling him how things had gotten in my marriage. I finished with, “I’d do anything to change it, to reignite our old spark.”

Donovan paused thoughtfully, then said, “You know, Beth and I have been out for a beer — just like this.” I nodded. I knew. He went on, “Well, I don’t think your feelings are far removed from your wife’s. Including Beth being willing to do anything.”

That did surprise me, but only a bit. Of course she felt the same. We were in the same marriage, after all.

He added, “You’re right to want to hold on to her. Beth is dynamite.”

We left it at that. But when I got home, I decided to tell Beth all about it. Whatever else, we needed to get our issues out in the open. She was receptive and understanding, and my love for her warmed me.

It was great to have the tension broken. Chuckling, I said, “You know, I think Donovan finds you quite attractive.” As an afterthought I asked, “Do you think he’s hot?”

She bit her lip, but the answer was there on her face. I didn’t respond with jealousy. That wasn’t an emotion either of us indulged in. Instead, an idea bloomed in my head, and the more I thought about it, the better it sounded to me.

“What are you grinning about?” she asked.

My smile accompanied a cherished memory. It was from the crazy days when Beth and I were first going out. When we were a couple of sex-struck lunatics eager to try any- and everything.

I asked, “Do you remember that night I watched you fuck Pete?”

She blushed, but I could tell it was mostly from excitement. Plainly she treasured that particular memory, too. It had been a wild time. We were upstairs at somebody’s house, while a party went on downstairs. Beth led me and Pete, a guy we sort of knew, into a bedroom. Not for a threeway. Beth had gotten it into her head that she wanted me to watch her have sex with another man.

It had been an amazing experience. They’d rolled around naked on the bed. I’d stripped, sat in a chair and jerked off slowly while they fucked. My flesh had tingled all over as my heart galloped in my chest. I shot hot jets of jizz all over myself, while Pete blew his load in Beth’s pussy and she shrieked orgasmically.

Now, I was looking deep into my wife’s eyes. I knew we were both thinking the same thing. But I was the one who said it out loud: “You should fuck Donovan, while I watch.”

Beth was totally onboard. But this was a proposition we needed to approach Donovan about together, so we invited him out to dinner. When we quietly broached the subject, I had the strange sense he’d been halfway expecting our invitation.

“Just to be clear,” he said, looking at me, “I wouldn’t be having sex with you?”

“Nope,” I assured him. “But I’d be watching you guys fuck, and I’d be naked. Does that bother you?”

Donovan laughed and replied, “I work at a gym. I’ve seen more naked dudes than you could shake a dude’s stick at. This sounds like a really fun idea.”

I was amazed by how easy the setup was. We took Donovan back to our place. Beth grabbed his hand and led him into the bedroom, while I trailed behind them. At the foot of our bed, she pulled him into an embrace, and I watched as they kissed. It started out a little tentatively, then a fire lit in both of them. Their tongues tangled, bodies grinding together.

I slipped into a chair in the corner of the room. The two were groping each other through their clothes. Donovan was squeezing Beth’s tits through her dress, and she was kneading his ass through his pants.

When they started stripping each other, my cock was already three-quarters hard. As their bare skin fully came into view, I had to unzip my pants to accommodate my full-blown hard-on.

Donovan’s hands moved over my wife’s body. She had his hard cock in her fist, elbow moving as she pumped him. I could hear their panting breaths as they tumbled onto the bed.

I had a perfect view. It was better than porn — far better. Not only was this happening live, but I knew these two people. And I was married to one of them! I knew how Beth responded, how she moved in bed. But to watch it from a distance was such a thrill.

They continued to kiss wildly with visibly tangling tongues. They showed no inhibitions, no signs even that they remembered I was there, which was perfect. I only wanted to observe.

Beth was still jerking him, and Donovan reached between her legs to tease her gleaming slit. I peeled out of the rest of my clothes. The air felt warm on my bare skin, like their bodies were heating the room.

He delved two fingers into her, and Beth ground down on his digits. She pulled harder on his cock. Donovan was nicely endowed, and his body — predictably, for a trainer — looked amazing naked.

When Donovan moved down to suck on Beth’s tits, I took my tool in hand. He flicked his tongue over her hard nipples as she raked her fingers through his hair. He nibbled her pink buds, causing her to cry out. I stroked myself with an easy tempo.

Donovan shifted further down her body, and Beth opened her legs. Her face was flushed and her eyes alight as he hunkered between her thighs. He put his mouth to her hairless cleft, and Beth’s hips jerked in a manner that was familiar to me. I realized only then that it had been too long since I’d gone down on her.

Our mutual trainer, however, ate her cunt with obvious relish. His tongue sank between her folds, and a sense-memory of her tang came to me. I continued to jerk my cock leisurely. A bead of pre-come welled up at my slit, then ran down over my fingers.

I watched the orgasmic thunderheads gather over Beth. Her body arched and arched. She had her fingers in Donovan’s hair again as a cry rose in her throat. He tongued her furiously. When Beth’s howl peaked, I knew he was tasting the outpouring of her orgasmic juices.

She basked in her pleasure for a brief moment, then moved with a sudden determination. She pretty much yanked Donovan onto his back and shouldered open his legs. Her hand went to his balls. Hot hunger made her face glow as her mouth descended on his swollen cockhead.

Of course, in the past I’d watched numerous times as Beth went down on me. But in this instance my view was dramatically different. I had the whole picture. My eyes lingered over the sweet swells of her ass as it rose in the air. I watched the undulating movements of her whole body as she threw herself into the act. The circle of her lips rode up and down his shaft. She sucked him down to where her hand cradled his balls, deep-throating him every time. I knew how that felt and saw Donovan reacting the way I always did — with writhing ecstasy. I wondered if she would suck him off, take his load in her mouth and drink down every drop. I jerked my cock harder at the thought.

But Donovan apparently had a heroic level of self-control. He pulled his dick away from Beth’s talented mouth, then drew her up onto himself. She eagerly straddled his pelvis. She fit his spit-shiny cockhead against her dripping pussy and impaled herself on him with a groan.

Again, I watched her whole body in motion, the gorgeous movement of her limbs and muscles. Her knees flexed as she bounced up and down on his hard pole. He thrust up into her wildly, his hands groping her tits.

Beth’s head whipped from side to side. Once again, I saw her orgasm strike her. She shuddered atop her hunky lover, crying out.

But Donovan still had to shoot his load. I sat forward as he flipped her over and climbed on top of her body. He speared himself frantically into her, immediately pounding away at her cunt.

I jacked myself in a frenzy, matching his speed. When his body clenched, I let my spunk fly. We all came together, with Beth sneaking in yet another climax.

And afterward, the three of us quickly made plans to do it again.