Addicted to My Best Friend's Man

I have a sex addiction. Every night, I hear my roommate Harper and her boyfriend Logan going at it through the paper-thin walls. It only fuels my craving. Gradually, I began to fantasize about Logan's hands on my body instead. Then came the road trip with Harper. The car hit a nasty bump on the dark highway. And Logan ended up pinning me right beneath him. Around Christmas, Harper invited me on a road trip. It wasn't until right before we hit the road that I found out her boyfriend was coming along. We drove over to pick Logan up. The moment I saw him, my jaw dropped. He was six-foot-three, built like a brick wall, with visible muscles stretching his fitted shirt. Logan looked me up and down the second our eyes met. Under that piercing, hungry gaze, a shiver ran down my spine, making my knees feel weak. Flustered, I looked down. That was when I noticed the very obvious imprint tenting the front of his grey sweatpants. He greeted me with a deep voice, but his eyes drilled straight into my cleavage. I'd always been curvier than most girls, and today I was wearing a low-cut top. My cleavage looked practically endless. I was also wearing a short skirt. One slight bend, and everything underneath would be on full display. With him standing right behind me, his gaze felt like fire against my skin. I realized with his height, he probably had an unobstructed view right down my shirt. Self-consciously, I yanked at my top and smoothed down my skirt, my cheeks burning hot. Without missing a beat, Logan casually looked away and offered to run into the convenience store to grab some snacks for the road. Watching him walk away, I couldn't help teasing Harper. "I've heard personal trainers are absolute beasts in bed. Is that actually true?" Harper gave a sly, flushed smile. "Hell yes. He wrecks me every single time. Honestly, the guy is packing something as thick as my forearm..." I gasped. Good lord. What must that feel like? What would it be like to experience that just once? My eyes involuntarily drifted back to him. As he walked back, the bulge in his sweatpants swayed noticeably. They say a man can expand to three times his resting size. I secretly measured it with my fingers, and my thighs instantly trembled. That big... What would it feel like to take him all in? Harper had bragged before that Logan had an insatiable sex drive, wanting it six or seven times a day. No wonder Harper always looked glowing and well-fed whenever I saw her. While my mind was spiraling, Harper leaned close and gave me a playful wink. "You're still a virgin, right? Want to give it a test drive?" My breath hitched. I bit my lip, panicking inside. "Harper! Stop messing with me!" I looked up just in time to see Logan walking back. Having caught Harper's comment about me being a virgin, a flicker of dark curiosity flashed in his eyes. Soon, we set off. I took the wheel in the front, while Harper and Logan curled up together in the back. In the rearview mirror, I could see Harper leaning against him, tapping on her phone. Logan's large hand slipped under her shirt, roaming boldly across her breasts. Watching them, heat rushed straight to my face, and my heart hammered against my ribs. I gripped the steering wheel tighter, trying to keep my eyes on the road. Yet my gaze kept drifting back to the mirror. Harper wore a tight purple dress that accentuated every curve of her body. Ten minutes in, I caught Logan sliding his fingers between her parted thighs more than once. When he finally pulled his hand back, his fingers glistened with wetness. Flushed, Harper whined playfully, "Babe, Sienna's right there..." Just then, we drove into a long, dimly lit tunnel. Under the shadows, Harper straddled Logan's lap and kissed him hungrily. I licked my dry lips, my imagination running wild, friction building between my thighs.After what felt like forever, we finally exited the tunnel. Harper winked at me playfully. "Sienna, hungry? Why don't we pull over at the diner up ahead so you can grab some takeout for the three of us?" Seeing the massive tent pitching between Logan's legs, I instantly knew what they wanted to do. "Sure," I replied hastily. The second I stepped out and shut the door, Harper's muffled moans drifted from the tinted windows. To give them some privacy, I ate my own meal inside the diner before heading back. When I peered through the window, Harper was still riding on top of him. They were so lost in each other that neither noticed me standing outside. I stepped back instinctively, but my eyes couldn't look away from the window. Watching the raw, dirty rhythm inside, my jaw parted in shock. I didn't even know that position was physically possible... My body went completely weak. Leaning against the hood, I unconsciously pressed my thighs together, rubbing to their beat. About fifteen minutes later, the movement inside finally stopped. I hurried to open the car door to hand them their food. My boot slipped on the pavement, and the takeout bags tumbled right onto the front driver's seat. Before I could hit the ground, a pair of strong, muscular arms caught me around the waist. I tilted my head back and found myself staring straight at the outline in his pants, heavy and unmistakable. Blood rushed to my cheeks. Harper chimed in from behind, "It's fine, Logan can clean the seat in a minute. Come sit in the back with us and relax. We're almost there anyway." "What?" My heart skipped a beat, but the memory of that thick outline sparked a shameful anticipation deep inside me. Harper slid closer, a faint musky scent clinging to the air around her. "The back seats fold down flat into a giant bed. It's huge. There's plenty of room for all three of us." Looking at the spilled grease on the driver's seat, I bit my lip. "Okay, fine." I tried to squeeze against the door next to Harper, but she claimed both she and Logan ran too warm and insisted I lay in the middle. I had no choice but to give in. Logan was broad-shouldered and heavily muscled. Once the three of us lay down, I realized just how cramped the middle truly was. My back was facing Logan. Every time the car shifted on the bumpy backroad, his hard chest pressed firmly against my spine. That raw friction sent a molten heat straight through my virgin body. I had spent years buried in my career, never having time for a boyfriend. I had never been this close to a grown man before. Exhausted from her earlier workout, Harper drifted off to sleep almost immediately. Logan, on the other hand, was still awake, scrolling through his phone. With Harper asleep, the silence grew suffocating. Trapped in the middle, I couldn't move an inch. My body began to burn up from the inside out, my skin on fire. Lying on my side became unbearable, so I flipped over—putting myself face-to-face with Logan. Because he was so tall, my face ended up level with his chiseled pecs. In the next breath, something scorching hot and rock-hard poked straight against my lower belly. Could that be...I swallowed hard, desperately fighting the electricity shooting through my core as I tried to pull back. A low, guttural groan rumbled in Logan's chest above me. That raw, masculine sound made my ears burn instantly. "Sorry..." I whispered nervously, clearing my throat and glancing behind me. Harper was out cold. I looked up. Logan's face was flushed dark as he shook his head. "Don't worry about it. It's too tight back here. I'll slide over a bit." He shifted his hips, and that solid rod brushed deliberately along the inside of my bare thigh. My throat went dry as a wave of heat pooled between my legs. The size of it... it felt unreal. I clamped my thighs together just to keep myself from whimpering. Just when I thought I had created a safe inch between us, Harper tossed in her sleep, bumping right into my back. The jolt sent me sliding straight into Logan's lap. Before I could stop myself, my entire rear sank down against his thighs. I shifted involuntarily. My God. My skirt had ridden up, bunching around my waist. His large hand landed on my hip, his breath ragged and heavy against my neck. Another shift in our weight, and I couldn't hold it back anymore—my hips collided with his, pulling a soft, needy whimper from my lips. Luckily, a passing semi blared its horn on the road just then, drowning out my sound. Face burning, I looked over my shoulder at Logan. He was licking his lips, his eyes dark with raw lust. "The roads are... really bumpy tonight," I muttered, mortified. I squirmed closer toward Harper, pretending not to notice Logan's hard length pressing flush against my lower back. My clothes were clinging to me, damp with sweat. The musky, manly scent of his skin filled my senses, sending my pulse through the roof. I bit down hard on my lip. To escape the suffocating tension, I squeezed my eyes shut and pretended to sleep. Yet even with my eyes closed, the fire inside me only burned hotter. I couldn't stop the dirty images from flashing across my mind. Harper wasn't exaggerating. That thing was literally as thick as an arm. Hours passed. Outside, the night grew pitch black. The parking area we pulled into was completely deserted. It was just the three of us. Harper stirred briefly, took a sip of water, and crashed right back to sleep. I thought about getting out to stretch my legs, but distant shouts and sirens echoed from the dark stretch of highway. Hesitating, I stayed put. I was left lying trapped between them again. Logan was facing me now. In the faint glow of the dashboard lights, I could see the dark flush on his rugged face. He was still staring down at his phone. Glancing at the reflection on the glass, my eyes widened in shock—he was watching hardcore porn! Shame and excitement exploded through me at once. I quickly turned my head away. Yet my body ignited like gasoline. To keep my cover, I kept playing asleep. But seconds later, Harper tossed again, shoving me hard. I bit my lip to keep from crying out as my heart battered against my ribs. Harper's arm nudged me straight into Logan's broad chest. Logan let out a raspy, low grunt. My breasts squished flat against his hard pectorals. In a panic, my hand grabbed blindly—landing straight over the bulge in his pants. Too terrified to open my eyes, I kept them tightly shut, feigning deep sleep. Behind me, Harper's breathing remained slow and rhythmic. She was completely dead to the world. I remained frozen in his arms. What I didn't expect was Logan's heavy hand sliding slowly over my shirt, cupping my breast.His huge palm pressed against the thin fabric, teasing and kneading gently. The car was pitch black, wrapped in heavy shadows. His touch pulled a breathless whimper from my throat. Shocked by my own sound, panic seized me. I darted a frantic glance over my shoulder at Harper. She was still fast asleep. No cars were nearby. Nobody was watching us. Driven by an irresistible wave of depraved lust, I grew reckless. I squirmed slightly, pretending to shift uncomfortably in my sleep, deliberately guiding his palm to squeeze fuller against my curves. The man over me growled, his lips brushing the shell of my ear. "Fuck. Even fast asleep, you're this damn needy. I want to fuck you so bad." The friction sent violent shivers racing across my skin. My soul was screaming in delight. A tidal wave of heat was ready to swallow me whole. My chest rose and fell rapidly under his touch, rubbing relentlessly against his solid torso. Losing his control, Logan yanked my skirt all the way up to my waist. I pretended to stir blindly, squirming just enough to let my wet panties slip halfway down my hips. Behind me, Harper let out a soft sigh, as if she were about to wake up. The terrifying thrill pushed me past the point of sanity. Taking advantage of Harper's movement, I arched my back, pressing my bare rear flush against his hardness. Logan clamped one hand firmly around my breast. Through hooded eyes, I watched his other hand—two thick fingers sliding slowly, relentlessly between my soaked thighs...