As we sat there in the den of the self-service cabin, I could feel the tension thickening the air. The dim light from the fire cast flickering shadows over our small group – myself, my wife Lisa, and the older stranger named Roy who had joined us on our hike. My suspicions about Roy's intentions towards my wife bubbled beneath the surface, but my fear of confrontation held me back from saying anything directly.

"Excuse me for a moment," Lisa said softly, her cheeks flushed from the warmth of the room. "I need to change into something more comfortable after that shower."

When she returned, wearing tight blue yoga pants and a white t-shirt, her wet hair clung to her neck and shoulders. It was easy to see that she didn't have a bra underneath; her dark nipples were visible through the partly transparent fabric. My heart raced as I watched Roy's eyes linger on her body, his gaze hungry and unapologetic.

"Feeling better now, Lisa?" he asked, smirking as he took in her appearance.

"Y-yes, thank you," she stammered, her voice barely audible.

"Good," Roy replied, still staring at her intently. "You look absolutely delicious, dear."

My jaw clenched, but I remained silent as I felt my jealousy building. I couldn't help but think about what might happen if I allowed this situation to escalate any further. And yet, a part of me wanted to see just how far it would go.

"Lisa," Roy continued, leaning closer to her. "Why don't you come sit next to me? Your husband doesn't mind, do you, Paul?"

My throat tightened at the sound of my name, and I could only manage a weak nod. Lisa hesitated, her eyes darting between Roy and me, before finally moving to sit beside him.

"Are you enjoying the hike so far, Lisa?" Roy asked, leaning closer to her.

"Um, yes," she replied, her voice quivering. "It's been really nice."

"Paul, do you know how lucky you are to have such a sexy wife?" Roy asked, tilting his head towards me. "She's quite the catch."

"Y-yes, I know," I choked out, my heart pounding in my chest.

"Hey Paul, how about we crack open some cold ones?" Roy suggested, already reaching for the beers. I hesitated for a moment but then grabbed one, feeling the cool condensation on my fingertips.

"Sure," I murmured, popping the cap off and taking a swig. The bitter taste did little to calm the storm of emotions churning inside me.

"Lisa, would you like some red wine?" Roy asked, his voice dripping with charm as he poured her a glass without waiting for her response.

"Thank you," Lisa replied, giggling like a schoolgirl. With each laugh, her small breasts jiggled beneath her damp shirt, making it impossible to ignore her hard nipples. My jealousy intensified, but I tried to focus on my beer instead.

"Isn't this cozy?" Roy grinned, sipping his beer. "Just the three of us, enjoying our drinks and each other's company."

"Y-yeah," I stammered, feeling my face heat up. God, why was I letting him get to me like this?

After a few glasses, Lisa excused herself, needing to go outside since the toilet was broken. "Be right back," she said, wobbling slightly from the wine.

"Take your time, sweetheart," Roy called out after her, smirking at me as he finished his beer.

"Paul," Roy said, fixing his eyes on mine. "I'm going to heed the call of nature myself." He stood up, leaving me sitting there in shock as he followed her outside.

"Shit," I whispered under my breath, my heart racing. I couldn't just sit here, not knowing what was happening. I jumped up and hurried to the bedroom, peeping through the curtains to catch a glimpse of them.

There she was, squatting in the grass, peeing. The sight of her vulnerable state only served to heighten my arousal. As she began to wipe herself with some toilet paper, Roy appeared from around the corner.

"Ah!" Lisa gasped in surprise, scrambling to pull up her panties and yoga pants. "What are you doing out here?"

"Look," Roy said, his voice low and sultry, "you got a few drops on your tights. You can just take them off and let them dry in front of the fire inside."

"Roy, I..." Lisa hesitated, clearly torn between embarrassment and temptation.

"Come on, don't be shy," he coaxed, reaching for the waistband of her yoga pants.

"Stop," she whispered, but her eyes told a different story. They were clouded with desire, and I knew that my timid wife was struggling with this newfound lust for Roy's dominating presence.

"Come on, little Lisa," Roy cooed, stepping closer to her. The heat from his body seemed to radiate onto her skin, igniting a fire within her that she hadn't known existed. "I'll help you." He moved his rough hands to the lining of her yoga pants, the calloused fingertips sending electric sparks down her spine as he began to pull them down. My chest tightened as I watched him slowly peel the fabric down her thighs, revealing her white cotton panties clinging to her curves.

"Look, you got a few drops on your tights," Roy said, his voice dripping with insinuation. "You can just take it off and let it dry in front of the fire inside."

"No, I have another pair inside," Lisa replied, her cheeks flushed with a mix of embarrassment and suppressed desire.

My heart pounded in my chest as I watched from behind the curtains, feeling both helpless and captivated by the scene unfolding before me. Lisa's breathing hitched, her chest heaving as she looked into Roy's eyes, searching for some hint of mercy or understanding. But all she found was a predatory glint that made her inner thighs quiver with anticipation.

"Roy, I...mmm..." she murmured, biting her lip as he continued to peel her tight leggings down her creamy thighs. Her eyes fluttered closed for a moment, lost in the sensual experience of being undressed by this dominant older man.

"Tell me what you want, Lisa," Roy whispered, his hot breath caressing her earlobe. "Do you want me to stop?" His words were a mix of threat and promise, daring her to give in to her deepest desires.

I clenched my fists at my sides, torn between rushing out to defend my wife and staying hidden, allowing the erotic tension to build. A part of me wanted to see how far Lisa would go, driven by the powerful chemistry between her and Roy.

"Your panties seem to be wet as well," Roy observed, smirking. He moved closer to my wife, who tried to wiggle away, but Roy's surprisingly strong grip held her in place.

"Roy...what are you doing?" Lisa asked, her voice quivering with a mix of fear and excitement.

"Helping you, sweetheart," he replied, his voice dripping with lust. With a firm tug, he pulled her pants down to her ankles, leaving her standing there in her damp white cotton panties.

"Roy, don't," Lisa protested weakly, but her desire for this older man was evident in the way her body trembled with anticipation.

"Tell me what you really want, Lisa," Roy growled, his hand reaching out and brushing against the soaked fabric of her panties.

"Please," she whispered, biting her lip and arching her back, clearly craving more of his touch.

"Say it," Roy demanded, his fingers teasing the edge of her cotton underwear.

"I-I want you to touch me," Lisa admitted, her words electrifying my senses and flooding me with both arousal and jealousy.

"Good girl," Roy praised, his fingers slipping under the waistband of her panties. I couldn't believe my eyes as he began to pull them down, exposing my wife's most intimate area to this stranger.

As Lisa stood before him, her hairy bush completely exposed, she finally found her voice. "What are you doing? You can't just touch my..." Her words trailed off.

"Touch what?" Roy whispered into Lisa's ear, his breath hot and heavy against her skin. The faint giggle that escaped her lips sent a shiver down my spine.

"What is it that I can't touch?" he continued, his hands resting on her hips as she stood there with her back to him, her white panties stretched tight around her ankles.

"My little pussy," Lisa whispered, the words leaving her lips like forbidden fruit. I clenched my fists behind the curtains, torn between wanting to rush out and protect my wife, and the undeniable thrill of what was unfolding before me.

"Say it louder," Roy commanded, his fingers tracing circles on Lisa's exposed thighs, causing goosebumps to rise in their wake.

"Touch... touch my little pussy," she stammered, her voice quivering with need. Her dark nipples poked through the damp fabric of her white t-shirt, betraying her arousal.

Enough. I had to tear myself out of this strange trance I was caught up in. I ran out to confront them.