My ‘straight’ brother was fucking a guy. I watched… and came

(All characters are 18 or older.)

*He had a girlfriend, talked about tits nonstop, always acted straight. Then I saw him do this.*

We’d been out drinking, just the two of us. Around 1 a.m., my brother said he was calling it early. I stuck around for one more beer, then walked home, expecting him to be passed out by the time I got in. The house was dark when I entered. I didn’t turn on any lights. Our parents were away for the weekend, and I knew my way around.

I was heading toward the guest room when I heard it. A soft, rhythmic creaking. Breathing. Wet sounds. A quiet moan. I slowed down. My brother’s door was slightly open. I shouldn’t have looked. But I did.

He was naked, standing at the edge of the bed, his body glistening with sweat. Bent over in front of him was another guy, one foot up on the mattress, ass tilted high, getting it deep. My brother’s cock disappeared into him again and again, slow and heavy. The slap of skin echoed softly in the room. My breath caught in my throat.

I had no idea my brother was into guys. He’s got a girlfriend. He’s straight-acting as hell. Confident, chill, always flirting with girls, always talking about tits. Nothing had ever made me think... this. And yet here he was. Naked. Muscles tense, his thick cock slick with spit or lube or both. Holding this guy’s hips like he owned him. Fucking him like it was the most natural thing in the world.

Something twisted in my stomach. I should’ve been disgusted, or at least confused. But I wasn’t. My cock got hard almost instantly. I didn’t understand it. I’d never gotten off to gay porn. Never thought I’d be turned on watching two guys fuck.

But here I was, staring at the scene in front of me with my heart pounding and my jeans already damp. And it wasn’t just two guys. It was my brother.

I pressed my palm over my bulge, rubbing slow, shallow breaths catching in my throat. My eyes locked on the way his cock pushed into that stretched, slick hole, raw and swollen, glistening in the dim light.

“Fuck, yeah,” he growled, gripping tighter. The guy whimpered. “More... please...”

My brother leaned forward, grabbed a fistful of hair, and yanked the guy’s head back. “You like your hole filled with my cock?” he muttered, low and rough.

“Yes,” the guy moaned, voice shaking. “God, yes.”

He spat down on the man’s ass, then shoved back in hard. His balls hit with a wet slap. The guy gasped, digging his fingers into the mattress.

My hand pressed harder against my jeans. I was leaking so much precum it soaked through the denim. I could feel it, warm and spreading, clinging to my skin. My cock throbbed with every slap of skin in that room.

“Say it,” my brother whispered. “Say who’s fucking you.”

“You are,” the guy choked out. “You’re fucking me... your cock feels so fucking good...”

“Yeah, it does,” my brother growled. “Next time, I want you on your knees first. Drooling all over it before I wreck you.”

I nearly moaned out loud. My brother was pounding him now, harder and faster. His thighs flexed, sweat dripping down his spine. His grip on the man’s hips was brutal. The guy’s hole was red, stretched wide, glistening, taking it all. And I couldn’t stop watching.

I bit my lip, eyes wide, breathing through my nose, barely holding back the sound that wanted to escape. Then it hit me.

I was jerking off. Not with my hand, but with my hips grinding into my own palm, desperate for friction. I was rock hard, soaked, aching. And I was about to cum. I wasn’t even touching myself properly. Just watching. Just listening.

Watching my own brother fuck a man like he was made for it.

Watching my brother.

And I came.

My body locked up. Cum flooded my underwear, hot and thick. I bit down hard, legs trembling, heart hammering. My vision blurred.

Inside the room, I heard it. My brother’s breathing changed. The rhythm stuttered.

“Fuck, I’m close,” he panted. “Take it... fuck, take it.”

One more thrust and he slammed in deep, holding it there. His back arched, head tipped back. He grunted once, then again, louder, as he came. His whole body shuddered. The guy moaned under him, still shaking.

They stayed like that for a few seconds, catching their breath, bodies slick and close.

I backed away from the door slowly, my jeans heavy, heart racing.

He never saw me. And he still doesn’t know I was there. But every night since, I’ve closed my eyes and heard his voice all over again.

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