My Step Bro caught me sniffing his underwear

All characters in this story are 18+
This story is fictional.

I shouldn’t have been in my Stepbrother's room.

But his gym bag was there. And his underwear—gray, stretched, damp with sweat—was right at the top.

I’d seen him toss it in after his shower that morning, walking shirtless down the hall, all abs and cocky grin, barking at me to “get a life, bro” as I stared way too long. He was 23. I was 19. And ever since our parents married, he’d acted like the world revolved around his protein shakes, perfect body, and locker room stories.

Now I was kneeling in front of his bed, heart pounding, holding his briefs to my face. They smelled like him. Heat and salt and something that made my stomach tighten.

I closed my eyes and inhaled.

“Seriously?”

My heart stopped.

I jerked around—and there he was. Standing in the doorway. Shirtless again. Gym shorts hanging low, one eyebrow arched.

“What the fuck are you doing, bro?” His voice was calm. Too calm.

“I—fuck—sorry—I didn’t mean—”

“Sniffing my underwear?” He took a step into the room, shutting the door behind him. “Damn.”

I dropped the briefs like they burned and backed up on my knees. “I wasn’t— I mean—”

He looked at the underwear, then back at me. And smirked. “If you wanted it that bad, why didn’t you just ask?”

I swallowed. My throat was dry. I had no answer.

“I’m not gay or anything,” he said, stepping closer, eyes fixed on me. “But you’ve been looking at me like you wanna suck me off since spring break.”

He let that hang in the air.

Then he pulled the waistband of his shorts down an inch. “So?”

I blinked. “What?”

“You want it?” His voice dropped. “Come get it.”

I didn’t move at first. Couldn’t. Then I crawled toward him, legs shaking, and he watched me like I was entertainment.

“Fuck,” he muttered, as I reached for the waistband. “You’re really doing this, huh?”

His cock was already half-hard when I pulled his shorts down. Thick, heavy, shaved like he cared about showing off. I leaned in, nervous as hell—but he just rested one hand on the back of my head.

“Take your time,” he said. “And don’t make me regret this.”

I opened my mouth and wrapped my lips around him.

He hissed through his teeth. “Shit.”

The weight of him. The smell. The faint taste of sweat. It was too much, too fast, but I couldn’t stop. I bobbed slowly, tongue pressed under the shaft. He grew harder in my mouth, filling me up, cock twitching as I tried to take more.

“Fuck, you’re actually good at this,” he muttered, fingers tightening in my hair. “Didn’t think you’d be such a little slut for it.”

I moaned around him. He chuckled.

“You’re seriously into this, huh?” His hips started moving. Not much—just shallow thrusts, enough to make me gag a little. “Didn’t know my baby bro wanted to be a cumdump.”

I looked up at him, eyes glassy.

He grinned down. “Keep going. I’m not stopping you.”

I did. Faster now. Sloppier. His abs tensed and his thighs flexed, and his voice dropped to a growl.

“I’m gonna nut in your mouth, bro. You’d better swallow every drop.”

His body jolted, and a moment later, I felt him throb against my tongue.

He came with a groan, holding my head in place while he pulsed. Hot and fast. I swallowed, like he told me to. Like I needed it.

When I finally pulled back, breathless, he looked down at me with a smug half-smile.

“You’re lucky I forgot my wallet,” he said, pulling up his shorts. “And lucky I’m in a generous mood.”

Then he winked. “But you owe me one now, bro.”

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