Good Boy Next Door
🔥 Bonus Chapter: “The Mustang”
An exclusive scene by Jace Wilder — too hot for retailers
⚠️ Content Warning: This bonus chapter contains explicit MM sexual content, praise kink, graphic language, and scorching heat. Intended for readers 18+ only. Read the full novel first — this scene takes place after Chapter 24.
The Mustang
Miles
Kai didn’t know I was coming.
That was the point. It was a Saturday—his day at the shop, his Mustang day, the weekly ritual he’d maintained since the restoration entered its final phase. He’d been there since eight, according to the text he’d sent at 8:04 (At the shop. Paint’s curing. Might be late.) followed by a photo of a cherry-red fender gleaming under fluorescent light that was, objectively, car pornography.
The car was finished. Three months of stripping and welding and rebuilding and painting, and the ’67 Fastback Mustang was done. Cherry red. Restored from a rusted skeleton into something so beautiful it made my chest ache when I looked at it—not because of the car, but because of what it represented. A man who could take something abandoned and broken and make it run again.
I showed up at seven. The shop was closed—Samuels and Frankie long gone, the lot empty except for Kai’s truck. The bay door was half-open, warm light spilling onto the wet pavement. Music drifted out—not the talk radio Kai usually listened to but something low and rhythmic. Blues, maybe. Guitar and gravel.
I ducked under the bay door and stopped.
Kai was leaning against the Mustang.
Shirtless.
He’d been working—the evidence was everywhere. Shop rags on the floor, a buffer on the bench, a can of finishing wax half-empty on the hood. He’d been polishing the car and somewhere in the process had ditched his shirt because the bay was warm and he was alone and Kai Mitchell without an audience was a man who forgot to perform the things the world expected, like wearing clothes.
He was facing away from me. One hip against the driver’s side door, both hands braced on the roof, his head tipped back. The fluorescent lights caught every line of him—the broad shoulders, the tattoo sleeve in full color, the muscles of his back shifting under skin that was sheened with sweat. His jeans were slung low, the waistband of his boxers visible, grease smeared on his right hip where he’d wiped his hands.
The car was beautiful. The man was devastating.
I didn’t announce myself. I stood there in the bay door, a paper bag from the Thai place on Hawthorne in one hand and the keys to our apartment in the other, and I watched him the way he watched me when he thought I wasn’t looking—with total, unfiltered, unashamed want.
He turned. Saw me. The surprise registered—a quick flash in those gray-green eyes—and then it shifted into something warmer. Something that looked like the moment you come home after a long day and the lights are on and someone’s already there.
“Hey,” he said.
“Hey.” I held up the bag. “Brought dinner.”
“You didn’t have to—”
“And yet.” I set the bag on the workbench. Walked toward him. Slowly. Deliberately. Letting my eyes track the path I intended my mouth to follow—his jaw, his throat, his collarbone, the trail of dark hair that descended from his navel and disappeared below his waistband. “She’s finished?”
“Final wax coat. She’s done.”
I stopped in front of the car. Ran my hand along the hood—warm from the lights, the surface so smooth it felt liquid under my fingertips. Cherry red. The color of something loved back to life.
“She’s gorgeous,” I said.
“Yeah.” But he wasn’t looking at the car. He was looking at me. That look—the dark one, the heavy one, the one that made the air between us change pressure. “She is.”
I met his eyes. Let him see what I’d come here to do.
“The food can wait,” I said.
He read me. The way he always read me—instantly, completely, the vibration and the frequency and the need decoded in a single scan. His jaw tightened. His hands flexed at his sides.
“Miles—”
“You spent three months rebuilding this car.” I stepped closer. Put my hand flat on his bare chest—over the forget-me-nots, over his heart. Felt it hammering. “You took something broken and made it beautiful. And now I’m going to celebrate with you. On this car. Right now.”
His pupils blew. The gray-green swallowed by black in the space of a heartbeat. His hand came up—instinct, reflex—and gripped my hip. Hard. Pulling me into him until our bodies were flush and I could feel him through his jeans, already thickening, already responding to the proximity and the intent and the look on my face that said I am going to wreck you.
“On the car,” he said. Low. Not a question. A confirmation. A man checking the specs before he starts the engine.
“On. The. Car.”
He kissed me. Not slow. Not careful. The kind of kiss that happens when a man has been polishing a car alone for three hours and his boyfriend shows up with intent written on his face—fast, deep, his mouth opening mine, his tongue finding mine, his hands already pulling my shirt over my head before the kiss broke.
My shirt hit the concrete. His mouth was on my neck—biting, marking, the possessive urgency that came out when Kai stopped thinking and started doing. I arched into him, my hands on his chest, sliding over sweat-slick skin and muscle to his shoulders, his biceps, the tattooed arm I’d traced with my mouth a hundred times.
He walked me backward. Three steps and the back of my thighs hit the Mustang’s fender. The metal was warm—sun-lamp warm, body-temperature warm—and the surface was smooth under my hands as I braced against it.
“Up,” Kai said. One word. That voice. The one that took the wheel and brooked no argument.
I hopped up onto the hood. The warm metal curved under me, solid and sleek, and the sheer obscenity of the image—me, shirtless, sitting on the hood of a car he’d rebuilt with his own hands—did something visible to Kai’s composure. His eyes raked over me with the focused intensity of an engine diagnostic, and his tongue pressed against the inside of his lower lip, and the sound he made was barely audible: a low, guttural exhale of want that I felt in my spine.
“Lie back,” he said.
I lay back on the hood of a ’67 Mustang Fastback in cherry red and watched the fluorescent lights buzz overhead and felt Kai’s hands find my waistband.
He pulled my joggers off. Slow—peeling them down my hips, my thighs, off my ankles, dropped on the floor. No boxers underneath. I’d made that decision at home, the same strategic logistics as the first time, and Kai’s face when he saw—the dark, devastating, almost pained look of a man confronting exactly what he wanted—was worth every second of premeditation.
“You came here with no underwear,” he said.
“Strategic decision.”
“You planned this.”
“I plan everything. I’m a planner.” I propped myself up on my elbows. Naked on his car. The metal warm against my back, my ass, my thighs. “Are you going to stand there running diagnostics or are you going to touch me?”
He moved between my legs. His hands found my thighs—gripping, spreading, pulling me toward the edge of the hood until my hips were at the rim and my legs were wrapped around his waist. The denim of his jeans against my bare skin was a friction that made me gasp—rough where I was smooth, hard where I was soft, the contrast of his clothed body against my naked one a power dynamic that short-circuited my higher brain function.
He leaned over me. One hand braced on the hood beside my head, the other sliding up my stomach, my chest, finding my nipple and rolling it between his fingers. I arched off the metal—the sensation amplified by the warm surface beneath me, every nerve ending lit, my cock hard against my stomach and aching for his hand.
“I built this from nothing,” he said. Low. Against my jaw. His mouth moving down my throat. “Stripped it to the frame. Replaced every gasket, every bearing, every bolt.” His hand trailed down my chest. My stomach. Lower. “Took something someone else gave up on—” His fingers brushed the base of my cock and I whimpered. “—and made it run.”
“Kai—”
“This is what I built.” His hand wrapped around me. Full, tight, the calloused grip that made my vision dissolve. “And you—” A stroke. Slow. Devastating. “You’re what I keep.”
The words went through me like electricity. My back bowed off the hood, my hands scrabbling for purchase on the smooth metal, finding nothing, grabbing his shoulders instead and pulling him down against me. His mouth found mine. I kissed him like I was trying to crawl inside him—desperate, graceless, all tongue and teeth and the moan he swallowed when his hand tightened on my cock and stroked faster.
“More,” I gasped. “I need—Kai, I need more—”
He pulled back. Undid his belt. The sound of the buckle—metal on metal, leather through denim—echoed in the empty bay, and the deliberateness of it, the unhurried precision while I lay naked and desperate on his car, was so perfectly, infuriatingly Kai that I could have screamed.
His jeans came down. His boxers. And then he was bare—all of him, six feet of broad-shouldered, tattoo-sleeved, sweat-sheened mechanic standing between my spread legs in a garage bay with the fluorescent lights buzzing overhead like a hymn.
He gripped both my hips. Pulled me to the edge of the hood. Pressed his cock against mine—the full, hot, rigid length of him alongside me, the contact sending a bolt through both of us. His forehead dropped to mine. His breath came fast.
“Look at you,” he murmured. “On this car. Under these lights.” His hips rolled—a slow, grinding thrust that slid his shaft against mine. “Like you were made for this.”
“I was made for you—”
He wrapped his hand around both of us. Both cocks in one fist, pressed together, slick with the precome leaking from both of us—and he stroked. Slow at first, finding the rhythm, the angle, the pressure. His hand was big enough to encompass both of us with room to spare, the callouses creating a friction that was rough and perfect and borderline unbearable.
I threw my head back. The hood caught my skull with a dull thud and I didn’t care—didn’t feel it, couldn’t feel anything except his hand and his cock and his body between my legs and the warm metal beneath me and the sounds he was making, low and guttural, each exhale a groan that vibrated through both of us.
“You’re shaking,” he said.
“Obviously I’m shaking—”
“That means you trust me.”
The callback. The words from the voice-only night—the night he’d learned to be present without his hands, the night he’d said I love you for the first time with nothing but sound. Hearing them here, now, in the fluorescent light with his hand around us and his body over mine, pulled the threads of every moment together into a single, blinding point.
“I trust you,” I said. “I trust you with everything.”
His rhythm changed. Faster. Harder. His free hand found my jaw, tilted my face up, held me there—forced eye contact, my gaze locked on his, unable to look away, unable to hide. His eyes were black. Blown. Wild. The granite man with the one-word sentences and the careful control was gone, and what was left was raw and open and looking at me like I was the most important thing he’d ever held.
“Good boy,” he said.
I shattered.
The orgasm hit me like a wall—full-body, spine-arching, the kind that starts at the base and detonates upward through every nerve ending. I came with a cry that echoed off the concrete and the metal and the high bay ceiling, my cock pulsing in his fist, spilling hot between us, across my stomach, across his hand, across the warm cherry-red hood of the car he’d built from nothing.
He followed me over. Three more strokes—his hand tightening, his hips stuttering—and he came with my name in his mouth, his forehead pressed to mine, his body shaking with the same tremor that had started in mine. I felt him pulse against me, felt the heat, felt the breath punched out of his lungs and the sound—Miles, God, Miles—vibrating between our mouths like a prayer.
Silence.
Breathing.
The fluorescent lights buzzing. The blues guitar, still playing. The distant sound of rain on the bay roof.
I was lying on the hood of a ’67 Mustang in a puddle of our combined aftermath, and the man I loved was collapsed against me with his face in my neck and his heart hammering against my chest and his hand still loosely wrapped around both of us, and I started laughing.
“What,” he mumbled. Into my neck.
“We just had sex on your car.”
“We did.”
“On the Mustang. The car you spent three months restoring. The cherry-red, immaculate, freshly waxed Mustang.”
“…Yeah.”
“That’s going to leave a mark on the paint.”
He lifted his head. Looked at the hood. Looked at the mess. Looked at me—naked, flushed, grinning, sprawled across his life’s work like a debauched centerpiece.
The smile. The real one. The crinkle one. The one that was mine.
“I’ll buff it out,” he said.
“You’ll buff it out. That’s your response.”
“I have a very good buffer.”
“You are unbelievable.”
“And you—” He kissed my forehead. My nose. The corner of my mouth. “—are lying on my car. Naked. Looking like that. And I’m going to remember this every single time I drive it.”
“Good.” I pulled him down for one more kiss. Slow. The kind that isn’t about starting something—it’s about finishing it. Sealing it. “That was the plan.”
We cleaned up with shop rags. Got dressed. Ate cold Thai food on the workbench with our legs dangling and the Mustang gleaming in the bay behind us, cherry-red and perfect and marked—permanently, invisibly, ours.
He drove me home in the truck. I sat in the middle of the bench seat—not the passenger side, the middle, right next to him, my thigh against his, his hand on my knee.
“Kai?”
“Hmm.”
“This is what I built.” I put my hand over his. “And you’re what I keep.”
His hand turned under mine. Fingers lacing. Grip tight.
“Good boy,” he said. Quiet. The words that meant everything.
I leaned my head on his shoulder. Smiled into the dark.
Good boy. His good boy. Always.
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Good Boy Next Door is available now — a 92,000-word MM cozy high-heat romance with praise kink, neighbors to lovers, and a guaranteed HEA.
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