'I — oh fuck, I shouldn't be doing this.' Sirius muttered, despite his hips continuing to press to his cousins desperately as his trousers strained. She grasped his hair, her own hair messily strewn from the enchanted twists of shining soft waves much like his own cut much shorter where he'd so violently shoved her up against the wall, 'Bella. . .'

'Mm?' the dulcet melody of her hum dropped his grey eyes to her mouth and parted his lips. He wanted to do more than kiss her. She smirked a little, as though reading his thoughts, 'you've come this far. . . why stop now?'

He didn't need to be told twice. His lips crashed back to hers and his hands went for her skirts, lifting the fabrics as he desperately sought to get to the vice he dreamt of every night abed countless other witches. His fingers found heat as hers unbuckled his belt, slick tight walls enveloping his thick digits and a soft gasp breathed against his mouth as he pulled himself free. He bought them to his mouth, sucking the two digits he'd had in her. She smirked — the smirk he hated — the one he knew meant she was smug he still desired her despite despising her.

'Because I hate you.'
'No you don't. Not really.'

Sirius was younger and hot and easy for Bellatrix to indulge herself in when she needed a quick hard fuck and the guarantee of an orgasm. Not that Rodolphus couldn't provide, nor the multitude of her other lovers, but Bellatrix liked this type of risk, hidden by a temporary shielding charm fucking her disowned cousin in an alley, his trousers barely pushed down to his knees in his animal desperation to fuck her? Because it was so wrong was exactly why he liked it too. He craved her scent, the taste of her skin, the sweet moans he could tear from her throat, the feeling of her nails setting into his skin, the cruel laugh which set his teeth on edge and consumed some of his darkest filthiest dreams.

Within a flurry of movements he had almost torn fabrics hitched up around her thighs and his thick, throbbing member pressing to her slick lips, pushing into her with a shudder of delight from them both. He grunted and she moaned, sending chills down his sweating back, her head tipping back against the brick wall, throat exposed, the vein on her neck pulsing hard — his only proof her heart existed and that it quickened because of him. He was never tender — nor would she want him to be.

He was ravenous, sinking himself into her until she mewled just a little and clutched harder at his hair, digging her nails into his scalp and the base of his neck. He pulled her leg up a little, re-adjusting it around his waist as he began to doggedly pound away at her like some sixteen year old boy fucking his dream witch for the first time. He was desperate and she was divine.

'Harder,' she demanded, scratching his skin, biting his lower lip and pulling it between her teeth, moans tearing from her throat forcing her to release him as the brick wall behind her took a hard beating, 'fuck — yes, harder.'

He obliged, panting and huffing into her neck and hair, grunting between every tight contraction of her slick walls around him. He was going to finish hard, but he'd be damned if he didn't make her finish first. Luckily, she never seemed to take long with him. She moaned unashamedly, thighs trembling a little as he pressed her up at just the right angle for a little longer before the friction was too much. She finished hard and loud — very loud, lips parted, grey eyes clenching closed for just a moment as heat washed over her.

It didn't take him much longer to meet her there. She tightened her leg around his waist, squeezing him in as he pressed his forehead to her shoulder, his grip on her tightening. He finished inside of her hard, a combination of his own climax and hers making him slick, a slew of incoherent curses muttered as finally she unclasped her fingers from his hair and released her leg from his waist, coming down a few inches as her stiletto boots found the floor, and using the wall just as he was to steady herself.

His hand remained pressed just beside her head, a dazed bliss in his grey eyes as he studied her, and for a moment he wanted to tell her he loved her. She grasped his face and kissed him as though she'd read his mind again, and in his breathless panting he kissed her back, groaning into her mouth, twitching in his own hand as he attempted to right himself.

She didn't wait. She slid out from between him and the wall, her skirts now back in their proper place, her hair done with a flick of her wand and her enchantments dismissed.

'Wait!' he exclaimed, barely putting himself to right no sooner had she begun walking away from him, 'Merlin, Bella — come on — wait a little, won't you?'
'For what?' she asked as she turned, brow raising towards him in her usual disdainful way. His lover was cruel, and he had no answer for her. He swallowed as she smirked, 'i'll see you soon cousin — hopefully down another dark alley.'

She disapparated with barely a pop as he put himself to rights, scowling at the space where she'd just been stood, knowing all too well he couldn't and wouldn't give her up if his life depended on it.