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Summary:

Prompt #6 Reg/Remus/Sirius
Established moonwater have been together for a few months, however, Reg has been sleeping with Sirius the entire time, and when Remus catches on, expecting himself to be horrified, only to end up being into it, the three of them find a way to be together. Lots of fluff!

Notes:

For dustycircusdd

Much like everything I write lately, this quickly devolved to pure smut, enjoy!

(See the end of the work for more notes.)

Work Text:

The room was dark, they didn’t dare turn on any lights. They hardly dared to speak when they were like this, tangled up with Regulus in Sirius’ lap and both their pants long gone. Regulus knew they couldn’t resist each other, no matter how hard they tried and fuck did Regulus try.

He just felt so guilty afterwards, when Sirius was done with him and left him a mess, dripping his brother’s cum. The guilt wasn’t enough to stop him, though. He didn’t dare stop, he didn’t dare risk upsetting his brother. He wanted to be perfect for him, wanted to be everything Sirius wanted; he would do anything to be a good boy for him.

Because really, that’s all Regulus wanted, to be told he was good. He’d spent so much of his life being told how wrong he was, how worthless he was, and he was desparate to hear anything else from anyone else. Someone like Sirius.

“We have to stop doing this,” Regulus murmured against Sirius’ lips as he rode him and despite his chastising tone, he couldn’t help but to smile softly.

“Yeah, yeah,” Sirius said against his lips before kissing him. “You say that every time, baby. Just keep riding daddy’s dick and stop worrying. I’ll take care of you, just be my good boy and I’ll take care of everything else.”

“Okay, daddy,” Regulus breathed out, letting his head drop back as Sirius kissed his neck and he let the sensations take over. Feeling the cock press every spot inside him, setting his skin on fire the way it dragged in and out of him, making everything else go quiet.

Everything except Remus’ voice in his head. Was it in his head?

“Daddy?” Comes Remus’ voice, that was definitely not in his head, the man barges into the room that they had stupidly forgot to lock. Regulus opened his eyes that had slipped closed at some point and watched the play of emotions over his boyfriend’s face. From fury to disgust, then to what looked like genuine consideration before he tentatively started to grin. “I thought I was ‘daddy’?”

“You call HIM daddy?” Sirius asked, taken aback and stopping the sensual movements of his hips where he had been fucking up into the man on his lap. “I thought that was our thing,” he pouted.

“Must just be a Regulus thing,” Remus said, moving slowly forward. “Isn’t that right, baby boy? Needed another daddy to take care of you? Just want to feel safe, I know. You are, promise. Right Sirius? Why don’t you tell him how good he feels around you.”

“Oh fuck,” Sirius cursed, having not expected Remus to say anything like that, much less expecting that it would turn Sirius on the way it did. It made his blood run hot and his cheeks heat. “That’s sexy, Rem, the way you try to take control—“

“It’s Sir to you.”

“Yes sir,” Sirius said with a crooked smirk, quickly accepting where he fell on the totem pole. If he was honest, it would be nice to let someone else take charge as long as he still got to make his baby feel good.

“Reggie baby? Is this okay with you?” Remus asked, placing a grounding hand low on the younger man’s back. “Do you want both of us to make you feel good?”

“Yes,” Regulus practically whines, clearly expressing how into this he was by leaning into the touch. He was more than happy to have two daddies to take care of him.

“Good. Now let’s make use of this bed you are sitting on the edge of. Seems a waste to ignore all that space we have to lay you out and fuck you, baby boy,” Remus cooed, reaching down to scoop up Regulus and pulling him right off of Sirius' lap and off his cock.

Regulus whined at the feeling of being suddenly empty. It was just like his daddy to be cruel to him before he really let him have it the way he liked. He liked to be full, too full, and now that both of his favorite cocks were in the same room…

“I see what you’re looking at,” Remus grinned as he deposited Regulus on the bed properly, following his boyfriend’s gaze from his cock to Sirius’ and knew exactly what he was thinking. “If you want that then you have to be a good boy and let us get you ready. It’ll be the first time we’ve done it without one being a considerably smaller toy.”

“Please, daddy, I want to. It’ll be even better like this.”

“What will?” Sirius chimed in, confused. He hadn’t been following the train of thought and couldn’t decipher what they were talking about with his brain too occupied with the anticipation of finally seeing his best friend’s dick. He could tell he was packing even through his slacks and had to admit he had always been curious. Curious enough that he thought at one point he might have a crush on him and a younger him would be salivating at the opportunity in front of him. Well, who was he kidding? He was practically drooling now over the anticipation.

He hadn’t considered this would happen, when he left the bedroom door open. He’d tempted fate yes, but not for this purpose. He figured Remus may wander from the party downstairs and try to find his boyfriend up here and he was hoping he would get mad and leave Regulus so Sirius could have his brother all to himself. But this? Getting to have them both? This was better.

“Double teaming him, Sirius, keep up. Why don’t you use that pretty mouth of yours to help get him ready, hmm?” He ran a hand through Sirius’ hair before gripping it and using his strength to push his face down between Regulus’ legs.

He took the hint and settled down on the mattress and wasted no time getting to work with his tongue, making Regulus moan unabashedly. Hopefully the chatter and ambient music downstairs would drown out the sounds since none of them had yet bothered to close the door.

Remus took his time getting undressed as he enjoyed the view, stroking his cock to his boyfriend’s moans until he finally climbed on the bed and pulled Sirius back by the hair to take over. He wasted no time holding up two fingers to Sirius, who immediately understood his job was to lick. Once his fingers were planty wet, he reached down to circle Regulus before dipping two digits in and fucking them in and out slowly.

“Already so wet for us. So slick, but not open enough. We can fix that,” he promised as he added another finger, keeping his motions despite Regulus’ squirming beneath him. “Remember, be a good boy… I know you can take it.”

Without any further warning, he added a fourth finger, scissoring him open and sneaking in his last digit, slowing down to really work himself into his boyfriend’s hole, nothing they hadn’t done before and yet Regulus was in tears and moaning, such a beautiful mess from him.

“You’re doing so good, baby, isn’t he Sirius?”

Sirius was sitting on his heels off to the side, watching his brother take Remus’ entire fist in amazement, and it finally dawned on him what the plan was. Regulus had wanted to take them both, the little slut. “Y-yeah. So good, baby. Gonna get exactly what you want, just like daddy promised.”

Remus, without warning, removed his hand from Regulus, leaving him gaping and a cool brush of air hitting his overheated skin as he sobbed from the loss. “Shh, it’s only for a moment. I think you’re ready for us. Just lay on your side like this,” he said softly, helping him to move and motioning for Sirius to lay chest to chest with him as Remus lay behind his boyfriend. “You first, Sirius, fill him up.”

“Yes sir,” Sirius didn’t dare waste any time after hearing that deep, commanding tone. He gently took Regulus’ thigh and wrapped it around his own, exposing him enough and shuffling them so he could once again push into his brother’s heat and fucked his hips forward gently a few times before stilling himself.

Remus plastered himself against Regulus’ back and trailed a hand down to where the brothers were joined, fucking two fingers into him alongside Sirius’ cock. It’d be a stretch for sure, but nothing his good boy couldn’t handle. “Ready, baby? Deep breath in… and out…” as Regulus exhaled he removed his fingers and swiftly replaced them with his own cock, pushing in slowly with a low moan of his own as Regulus let out a long, high-pitched, choked-out whine of a noise.

Never had Regulus felt so full and none of them had to move past this before he was cumming and shaking between them, making himself more of a mess than he already was.

Remus just nuzzled into the back of his neck, placing a tender kiss before pulling his hips back and thrusting forward, wringing out Regulus’ orgasm further as Sirius took that as a cue to move as well.

It was a mass of rolling bodies, cocks fucking into Regulus and it was everything all at once as he cried out, unable to stop writhing between them, so full that it felt just right to be just like this. Something he would never dare to dream about and yet here it was, bringing him new heights of bliss he didn’t know he could reach. He wasn’t sure when one orgasm stopped and another started, or how long they were like this before he felt both Remus and Sirius cumming inside him, a warm slick mess that all but gushed as soon as they pulled out.

By that point Regulus was so lost in the pleasure he wasn’t sure how long his eyes had been shut or how loud he had been, but he knew he was exhausted and ready to curl up and feel safe between these two men who made him feel the safest and most satisfied he ever had. A feeling he didn’t dare take for granted, didn’t dare feel ashamed of, even when he was confronted by none other than James for fucking his two best friends in his bed… and not inviting him.

Notes:

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