Boyfriend’s Brother!mattheo - Blog Posts

bfb!mattheo who hears/sees tom fucking u and makes up a whole scenario where he can one up his brother while he staring from the crack in the door?

⊹ ࣪ ˖ boyfriend’s brother!mattheo watching you and tom through the door

warnings ; 18+ mdni, p in v, voyeurism, swearing

₊⊹ navigation ; bfb!mattheo ; au’s ; m.list

he shouldn’t be here. 

he knows that. knows it in the way his fingers curl into fists at his sides, in the way his chest tightens with something worse than anger, something uglier than hate. knows it in the way his breath is fucking shallow, standing there like a goddamn ghost outside tom’s bedroom door, the sliver of space between the wood and the frame just big enough to see you.

and fuck—he wishes he couldn’t. wishes he could turn around, pretend he never heard the first telltale sounds, never saw the way your body moved beneath his brother, never had to watch you like this, spread out, panting, moaning his fucking name. tom. like you meant it.

his jaw clenches as he watches, eyes narrowing, assessing, criticizing. tom's movements are too stiff, too controlled, too fucking careful, like he’s handling glass instead of a girl who needs to be ruined.

his fingers twitch at his sides. tom’s grip on your waist is all wrong. it’s tight, but not tight enough—like he doesn’t even fucking realize what he has in his hands. your hips don’t lift high enough, your legs aren’t spread the way they should be. you need to be tilted forward just a little more—just enough to hit that one spot that makes your breath hitch and your fingers claw at the sheets. tom won’t do it. tom doesn’t know. mattheo wants to fucking kill him for it.

pathetic.

he drags his tongue across his teeth, biting down on his cheek so hard he swears he tastes blood. he could do it better. he would do it better. he’d ruin you. have you trembling, crying his fucking name instead. make you feel it in your bones, make you crave him like sin.

his nails dig into his palms. tom’s voice is steady, collected, not even a goddamn growl in his throat. not desperate. mattheo hates him for it. he hates him for touching you without the kind of obsession that would drive a man mad.

he exhales sharply, his hand dragging down his face, trying to fight off the sick, burning jealousy twisting in his gut. it’s embarrassing, really, standing here, watching, but he can’t help himself. because the thought won’t leave his head—how much better he could make you feel.  

he wonders what you’d sound like if it was him instead. if you’d gasp the same way, if you’d arch the same way. if you’d look back at him with that dazed, hazy expression, lips parted, cheeks flushed, body trembling. he bets you would. he bets you’d look even prettier falling apart for him. bets he could make you shake, make you cry, make you forget every single fucking thing about his brother.

his cock throbs at the thought, and he lets out a sharp exhale, pressing his forehead against the wall, trying to will the heat away. he should leave. he should fucking leave.

but then he hears you whimper, soft and broken, and he sees the way tom barely reacts, the way he doesn’t even acknowledge what a fucking gift he’s been given, and something inside him snaps.

fucking tom. doesn’t deserve you.  

he licks his lips, dragging his teeth over the lower one, and exhales slowly. 

one day, he tells himself, he’s going to ruin you. one day, he’s going to show you exactly what you’ve been missing. and when that day comes, you’ll forget tom riddle ever fucking existed.

© leona-hawthorne 2025. please do not copy, translate or repost any of my writing.