The Starcest Constellation

Regulus wanted to feel him inside of him, wanted to have Padfoot fucking him and didn’t want to wait until the sun was up.

Sirius mumbled something unintelligible, but let himself be pulled over the top of Regulus all the same, his lips finding their way to Regulus’ neck the second he was awake enough.

“No, Siri,” Regulus argued. “Shift.”

“You’re so hard, baby,” Sirius cooed, voice still rough with sleep. He skated his hands over Regulus’ body, sliding one of them between their bodies until his fingers were wrapped around Regulus’ cock. “You don’t want me to take care of you?”

Regulus shook his head. “I want you to be a good boy and shift. I want you fuck me and use me and come inside of me.”

Sirius whimpered, his body instantly shifting and transforming into his animagus form. He was suddenly all fur and paws and teeth, nudging against Regulus demanding that he flip over.

Obliging, Regulus climbed onto all fours, ass in the air in anticipation, Padfoot’s tongue one of his favorite things in the world.

Not that he would ever tell his brother that.

Padfoot pressed his snout between the seam of Regulus’ ass, tongue swiping over his puckered hole until he was loose and trembling and too close to losing control.

“Fuck me, Siri,” he commanded again, tired of waiting. He wanted to feel Padfoot knot inside of him, wanted to feel the swell of it against his prostate until he was coming into the sheets beneath him.

It took all of two thrusts of Padfoot’s hips before he was fully seated inside of Regulus. He was feral and hungry, moving inside of him at an animalistic pace, and yet he was somehow still holding back.

Waiting for Regulus to tell him he was allowed to come.

Regulus was close to the edge, hanging over the precipice by a fraying thread, and he needed Padfoot to come with him.

“Come for me, Siri,” Regulus moaned. “Fill me up.”

Like a switch flipped, Padfoot was coming, knot swelling inside of Regulus until Regulus was letting go and coming too.

Padfoot whimpered, an agreement and a plea for mercy all in one. He nudged at the front of Regulus’ jeans, as if to say this is the treat I want.

As if he actually did believe he deserved it.

Regulus let out a soft laugh. “Hm,” he mused. “You scared off my date just because you want to fuck me instead?” Regulus scoffed to cover the sound of his own prideful groan, and rolled his eyes at Padfoot to further push his disappointment.

Even if it wasn’t truly there at all.

The entire date had been a ruse, a simple ploy to get Sirius’ attention after weeks without it; Regulus was nothing if not needy when it came to his older brother. He felt like he had been infected by Sirius, addicted to the pleasure of just being with him.

Of touching him and fucking him.

He would take whatever Sirius gave him, including Padfoot.

“Stop looking at me like that in public,” Regulus chastised, nudging Sirius’ foot with his own. The floor of the bar was sticky with beer, Sirius’ feet tacky with it as he returned Regulus’ gesture. He ran his foot over the side of Regulus’ ankle and grinned as goosebumps erupted over Regulus’ bare arms.

“You look terribly sexy tonight,” he said, bringing his glass to his lips and taking a small swig of whiskey around the ice.

Regulus looked down and shook his head, but it wasn’t enough to hide the blush over his cheeks, or the wry smile on his mouth.

“Sirius,” he chastised. Sirius could barely hear him over the din of the crowd, over the thumping music coming from the speakers around the bar, but he could almost feel the quiver in his voice.

“I want to take you home,” Sirius mumbled, leaning forward and whispering the words into Regulus’ ear. “I want to push you down onto the couch the second I get you inside, and I want to fuck y—”

Regulus stepped back, sputtering, but his grey eyes were dark, and his tongue was swiping over his upper lip.

Sirius chuckled.

This was a bad idea— Sirius knew it, and yet he still leaned down and kissed the mole on the other’s back. The touch wasn’t met with a wince, much like it was back in the day, when this was wrong. It’s still wrong, god if anyone found out they’d be ostracized from society, but it’s not wrong to them— no not anymore.

They’ve learned to find solace in each other’s arms, comfort in the familiar touch of one another without repenting for it. And even if it’s twice as wrong now, the wedding ring on Sirius’ finger burning into his skin, they can’t help but feel how right it is.

Another kiss, followed by another; wandering hands and curious lips— their skin made to mold into one another. Sirius was never one to believe in soulmates and yet… what is the man below him if not the person created for him?

Sirius continues his worship; lips, teeth, and tongue etching itself into the skin, creating a memory that won’t be forgotten. People say that someone’s skin cells replace themselves every seven years; Sirius would never go that long without touching him.

It’s hard to resist the curve of his body, the softness of his skin, the way he was just made to take Sirius. The idea of soulmates dances on Sirius’ mind again but he doesn’t have time to dwell on it, not with the way his pleasure his cresting and he finds himself wanting to pour all his love into this person.

He knocked clumsily on the wooden door of Sirius’ apartment, and tried not to hold his breath.

It was only a matter of seconds before footsteps were padding closer and the deadbolt was sliding open, the door pulling in to reveal a thoroughly disheveled Sirius.

“Don’t you look fucking sexy,” Regulus slurred, his brother’s sleep-rumpled hair and low slung pajama pants doing absolutely nothing to make him regret his decision to visit so late.

Sirius ran a hand through his dark hair, eyes boring into Regulus as if he would find some sort of answer to his visit right there on the surface of his skin.

“Go home, Regulus.”

Regulus tutted in response. “But I miss you.”

“You shouldn’t miss fucking your brother,” Sirius argued, arching one brow.

“And yet…” Regulus reached out to run a finger down Sirius‘ jaw, thumb and forefinger meeting to squeeze his chin.

Sirius shook his head, just as Regulus slid his thumb in and out of Sirius’ mouth, dropping it only when he heard more footsteps from within the apartment.

All at once, there was a figure at Sirius’ back, pressing a kiss to Sirius’ neck.

James. Beautiful James, who Regulus had forgotten all about, in his drunken haste to see Sirius.

“Let him come in, baby,” James said, surprising Regulus. “I know how badly you still want him.”

Sirius nodded weakly, and moved for Regulus to make his way inside. It was only after James whispered into Regulus’ ear that he realized James and Sirius had actually discussed this.

“Show me how you take him apart.”