A/N: Because Sirius and Regulus were just siblings, after all. Set shortly before Sirius left home. The Ravenclaw mentioned is stolen from M'rika's soon-to-be-published 'In My Life' which I highly recommend :D

(Oh, and in case anyone wondered, in my head Sirius and Regulus look like Ben Barnes and Robert Sheehan respectively :D)

Disclaimer: Sirius and Regulus are both the property of J. K. Rowling

The Brothers Black

"Oi! Reg you great puff gerroff me!" Sirius was laughing as Regulus barrelled into him at the entrance to the Underground. His blue PVC bomber jacket still inflated after his dash down the pavement, Regulus flung his arms around his older brother, grinning fit to burst.

"Gods, Sirius. You wanker!"

"Hey," Sirius stepped back out of Regulus' embrace and smirked at him. "Did you actually expect summat to have happened to me? You daft twat."

Regulus shook his head. "You gave us a scare."

Sirius laughed, a grin breaking across his handsome face. Two girls, their arms linked walked past the brothers, their hands over their mouths to catch their giggles. Sirius couldn't resist winking at the blonde one. She blushed furiously.

Regulus cocked his head. "What you doin', winking at her?"

"Gotta keep up appearances, little brother." Sirius pushed the rolled up sleeves of his jacket past his elbows and then grinned at Regulus again. "Gods, have I taught you nothin'?"

"You taught me not to go near Helen Mulciber."

"And did you listen to me?" A man in a great swathe of white hoody pushed past Sirius and Regulus flicked him the finger.

"She was fit."

"Yeah, like I said, nice body, shame about the face."

Regulus grinned at him. "Serious though-"

"I'm always serious."

Regulus laughed. "Old, big bro. Old and destined for the sin bin."

"Well I'll stop doing it when you stop laughing." Sirius plunged his hands into the pockets of his jeans. "Don't you fucking say I gave you and Mumsy a scare. You, I might believe, you're such a soft twat."

"You got drunk and threw yourself off a fucking roof."
Sirius shrugged. "Yeah, but Jamesy caught me, didn't he?"

Regulus sighed. "You an' Potter. Doesn't your boyfriend get jealous? I mean, you two might as well be sucking each other off."

Sirius nudged him, his eyes gleaming. "You little fucker." He grinned, and took two hands to Regulus' mop of hair.

"Oi! Bastard! Get off! You're fucking with my hair!"

A prim looking woman climbing the steps from the Underground gave a horrified little gasp. Sirius turned to her and waved. Her hands twitched and then she huffed and stormed past them up the steps, tutting all the way.

"I thought I was meant to be the gay one," Sirius grinned as Regulus' fruitlessly tried to retame his hair.

"Fuck off." He growled, and then grabbed Sirius' neck and pressed a kiss to the side of his head. "You are a wanker."

Sirius went to retort and then started to laugh, his expression caught between shock and adoration for the man his little brother had grown into. "And you're a soppy bastard. Does your little Ravenclaw know that?"

Regulus winked at him. "You know that's what a lady likes."

Sirius looked him up and down. "You're having to resort to being romantic? Fuck, I really didn't teach you anything."