Hiya all! This is my very first fic written around Sirius. Hope you like it - please review!

Dedicated to Triskelesque, seriously cool chick and fantastic writer (check out her work) who put the idea of writing for Sirius in my head.

WARNING: No sex until later chappies. I know! I was surprised at me too! Read it anyway...when it comes, you know it'll be hot! Some swearing in this.

Chapter One

The Bet

'And then, she said that it was the biggest she'd ever seen…'

Remus couldn't help it - he burst into loud, uncontrollable guffaws, his book falling unnoticed to the bed as he shook with laughter.

'Either she's blind, lying or she's never seen one before,' he said after a minute, wiping his watering eyes. 'I've seen you in the shower, Pads. It's not that impressive.'

'Well, let me tell you,' Sirius retorted huffily, crossing his arms and leaning back against the bed head. 'Bridgette was very impressed - she went at it like it was going to be her last meal on earth…'

'Alright!' Remus said loudly, wincing and holding up a hand to stop the flow of words. 'Enough! I really don't want to hear this.'

'Don't want to hear what?' James asked as he and Peter came back into the room, handing around the armful of cakes they'd convinced the house elves to hand over before they joined the boys on Remus' bed.

'Is he telling you about his date with Bridgette?' Peter asked with a snicker, shoving half an éclair in his mouth.

'In great detail,' Remus muttered, looking at a cupcake with distaste and swapping it for a caramel slice with a thick layer of chocolate on top.

'You're all jealous,' Sirius snorted, snatching up the blue frosted cupcake Remus had discarded and gesturing violently with it. 'Jealous that every girl in this school, as well as a few of the guys, want my body.'

'They do not,' Peter argued, though a mouthful of cream. 'You aren't to everyone's taste. Mary wouldn't…' His voice trailed off when he saw the smirk on Sirius' face. 'You slept with my girlfriend?'

'No! No, we just...fooled around a bit. It was ages ago, Wormy, before you even knew she existed,' Sirius explained hastily, seeing the outraged expression on his friends' face. 'Just once…I swear. Come on, Pete. You know I'd never touch your girl.'

Peter looked somewhat mollified but glared at the black haired boy over his second éclair.

'You've never been with Lily,' James said confidently, then betrayed himself by frowning and shooting Sirius a quick glance. 'Right?'

Sirius shook his head. 'Not Lily,' he confirmed, spitting a few crumbs out as he spoke, making Remus click his tongue in disgust as they landed on his bed. 'But she doesn't really count - I haven't thought of her as a girl since you got the hots for her in Second Year.'

'I'm sure there's a girl somewhere in this school whose knickers wouldn't hit the floor at the mere sight of you, Padfoot,' Remus said as he brushed the crumbs off his blanket. James and Peter chuckled but Sirius only looked smug.

'Haven't found one yet,' he bragged, smiling that superior grin that made even the gentle Remus want to smack him around the head.

'Bet I could,' James said suddenly, a dare in his tone. 'I bet you five Galleons that I could find a girl that you can't get to fall into bed with you.'

Remus and Peter laughed but Sirius looked at James, a mischievous grin beginning to form on his face.

'Five Galleons?' he mused then smiled broadly. 'Make it ten.'

'Should you be betting on whether you can get a girl to sleep with you?' Remus asked with a frown. 'Isn't that a little…sleazy?'

'Ignore Mr Perfect Prefect,' James said, holding out his hand for Sirius to shake. 'The girl of my choice...'

'She's not allowed to be a cow,' Sirius said quickly, ignoring Remus' objection to his choice of words. 'It has to be someone I'd go out with and want to shag…and she has to be straight. I win if she likes girls.'

'Any other requirements, Mr Padfoot?' James asked in amusement.

Sirius thought for a second. 'No one who's got a boyfriend I'd have to chase off - I like my face the way it is. And no virgins. I do have some conscience.'

He glared at Remus, who'd snorted disbelievingly. James, however, was warming to his challenge and nodded.

'Deal,' he agreed. 'She has to be straight, available and experienced. No coercion or magic, Pads…she has to come hot and willing. And you aren't allowed to tell her or anyone else about the bet or you forfeit.'

'Fine,' Sirius agreed, waving his hand carelessly. 'So, 'into bed' means what exactly?'

'Sex,' James said firmly. 'Not snogging, not groping. Sex - actual sex, involving your bits going into her bits.'

Peter snorted, almost choking on his third éclair and Remus bit his lip to hold back his own laugh.

Sirius smiled confidently. 'No problem,' he said with a little shrug.

James chuckled a bit at his friends egotism. 'We'll need proof of consummation…let me think…'

'Her knickers?' Peter squeaked, his face a little pink and James grinned.

'Her knickers,' he agreed, then lifted his still outstretched hand. 'To win the ten Galleons, you have to have shagged her and bought us her knickers by the end of the last day of school before the Easter holidays. Happy, Moony? We'll still have plenty of time for study for NEWTS.'

Remus shook his head irritably, uncomfortable with the bet, but James continued.

'That gives you, what, three months, Pads? If you can't do it by then, it can't be done.'

'Deal,' Sirius agreed, shaking James' hand. 'And I won't need anywhere near three months. Who's the lucky lady?'

'All in good time, Pads,' James said with a wicked grin on his face. 'This is going to take some careful consideration. I'll let you know by dinner time tomorrow.'

Sirius shrugged and stuffed the rest of the cupcake in his mouth. It didn't matter who James picked. There wasn't a girl in this school that, after a few days of his attention, wouldn't be begging him to fuck them.

Easiest cash I've ever made.

A/N: What do you think? R and R, please?