Hermione cracked open the classroom door and peeked into the hallway. It looked deserted so she stepped out of the room and clicked the door shut carefully behind her. It was cold and drafty in the dungeons with no knickers on, and the moisture between her legs didn't help. She shivered and quickly made her way to the first floor student's floo room.

An old unused classroom had been turned into a floo room for the eighth year's weekend travels. Hermione tossed some floo powder into the fireplace and called out,

"Grimmauld Place!" and then her personal password, "Crookshanks!"

She stepped into the floo (crossing her fingers that the boys were already in bed) and tumbled out of the fireplace in Grimmauld's sitting room.

To her dismay Harry and Ron were sitting on the couch, papers strewn before them on the coffee table. They must have been studying for an upcoming Auror Training exam. Ron had been aghast when he'd realized how much written work was done in the Auror field. Hermione was just relieved she wasn't expected to help them study this year, she had lost all patience for their whinging.

"Mione!" Ron exclaimed, "it's getting late, we figured you weren't coming."

She smiled at them, "Oh you know how it is, I got to reading a good book and lost track of time! I am a bit tired though… I think I might just go to bed."

"But you just got here Hermione! At least sit with us for a bit. We haven't seen you all week." Harry said, and Hermione felt slightly guilty. She did miss them, she just felt so awkward in her current state.

"Alright, just for a few minutes. I'm sorry, I'm just exhausted!" Hermione gently sat down on the edge of the sofa opposite the boys, taking care to keep her skirt between her and the seat. She crossed her legs tightly and smoothed her skirt over her knees.

"So how's Snape?" Harry asked.

Hermione startled in her seat, "What??"

"Ginny said you had two detentions with him this week! Rotten luck, Mione." Ron explained. Hermione let out a breath. Harry gave her a funny look.

"Oh, right. It wasn't a big deal… Just typical detention stuff.." Ron scoffed.

"Not a big deal? Better you than me… You couldn't pay me to go back to class with that git." He exclaimed. Harry shoved him in the shoulder.

"Leave off him mate, you know he saved all our arses." Ron rolled his eyes.

"Well yeah, I didn't deny that, did I? He's still a right berk though." Harry smiled then, green eyes bright.

"True."

Hermione just wanted this conversation to be over. Even though she knew there was no possible way they could know what was going on between her and Professor Snape, it was still making her stomach twist with anxiety. She didn't like lying to her best friends. Fortunately Harry took that moment to change the subject.

"So Ron.. Looking forward to your date tomorrow? What's her name this time?" Ron's eyes widened for a second and he nudged Harry with his elbow.

"Shut up, mate!" He said lowly, very unsubtly making eyes towards Hermione. Hermione rolled her eyes with a huff.

"Honestly, Ronald. I'm your friend, I'd like to hear about what's going on in your life!" His ears turned pink and he shrugged sheepishly.

"Just trying to be considerate… I don't wanna rub it in, that's all."

Now she was irritated. Ever since Ron had gotten over their break-up he acted like she must be pining over him and their short relationship. She was the one who had broken up with him, for Merlin's sake! He seemed to think she was an asexual being who had no interest in dating or sex unless it was with him. Well, she'd had enough of that.

"For your information, Ronald," she snapped, cheeks red with annoyance, "I happen to be seeing someone. So you can quit it with that nonsense!"

Oh no, why had she said that?? She wasn't even actually seeing Snape, was she?

Ron's eyebrows raised up to his forehead and he sat forward on the couch.

"Really?? Who?"

Really, Hermione. You can't even keep a secret for three days??

Hermione's cheeks got even hotter.

"That's none of your business Ronald." She stated firmly, crossing her arms.

"Oh come on Mione, we're all friends here, like you said! What… is it a girl or something??"

Hermione paused. Well, I'd rather him think that then figure out the truth..

"I'd rather not say." She replied with her nose in the air. Ron grinned at her.

"Bloody hell it is a girl, innit!" He looked at her with wonder. "That's pretty hot, Mione."

Harry slapped Ron lightly on the back of his head and scolded him, "Mate!"

"Hey!" Ron rubbed his head, offended. "I'm just saying.."

Hermione rolled her eyes and stood up. "Well, on that note I'm going to bed. Goodnight, Harry. Goodnight, Ronald."

With one last annoyed glance in their direction Hermione grabbed her satchel and marched up the stairs to her bedroom.

The next morning Hermione sat at the breakfast table with the boys, spreading jam over a piece of toast. She had woken up that morning sore in places she hadn't known existed. Her bum felt tight and achy, and her vagina was definitely not used to the amount of stretching it had endured. She didn't mind, the tenderness was a nice reminder.

A sudden tapping at the kitchen window alerted them to the presence of a large barn owl waiting to be let in.

"I already got the Prophet this morning, wonder who that is." Harry commented as he opened the window and let the owl in. To Hermione's surprise the owl swooped over her and dropped a letter onto her plate. She fed it a corner of her toast and it swept back out through the window.

The envelope was bare except for a generically written 'H. Granger' in the center. She flipped it over and saw that the wax seal was a simple blank circle, no initials or crest. She had no idea who it could be from. After doing a quick check for hexes and other ill intent she shrugged and opened it.

'Princess,' the letter began in a familiar spiky script. Hermione's stomach clenched. She quickly scanned the end of the letter- there was no signature- but she would recognize that handwriting anywhere.

She continued reading.

'How did it go last night? Did your friends sniff out your little secret? I slept well with the scent of your sweet little cunny all over my sheets.'

Hermione's eyes almost popped out of her head. She glanced up nervously at the boys. Ron was busy stuffing his face with scrambled eggs and sausage, and Harry had the Prophet propped open in front of him. She sighed in relief and continued reading.

Are you reading this at the breakfast table next to your friends, like I intended? I hope you're wearing thick knickers.

They have no idea, do they? No idea that several hours ago you begged me to fill you with my cock, over and over. I'm the only one who knows what a naughty girl you are. How does your bum feel this morning? I want you to remember how much you loved the belt every time you sit down.

You asked me yesterday if we could schedule regular meetings. I've come up with a plan- make up an excuse for your friends and spend Friday nights with me. You can go to Grimmauld Place Saturday afternoons instead.

With that settled, I have some instructions for you. I've decided I'd like you to wait until Friday to climax. I know you want to be my good girl… As much as I love picturing you lying in bed at night frigging that little clit - just think about how intense it will be on Friday if you can wait.

Don't write me back. I'll see you in class on Wednesday… No knickers.'

By the time Hermione had finished the letter her face was on fire. She startled when Harry broke the silence,

"You okay, Hermione? He was studying her with a critical eye.

"Yeah, whose the letter from?" Ron said around a mouthful of food and tried to look over her shoulder at the parchment in her hands.

She quickly snapped the letter closed and held it to her chest.

"It's private medical information!" She lied. "You know… Girl stuff."

Ron blanched and turned back to his breakfast, ears going red. "Oh. Sorry." He mumbled.

"As long as you're okay, Hermione?" Harry asked. She didn't like the way he was staring at her.

"Yes I'm fine, Harry, thank you." Hermione gave him a soft smile. It was sweet that he was concerned about her. She felt another pang of guilt for lying to them.

Ah, well, I don't have much of a choice do I? They would probably have synchronized heart attacks if they found out.

Ron suddenly bolted up in his chair, blue eyes wide with panic.

"Blimey, you're not pregnant, Hermione?!"

He started frantically counting on his fingers. Hermione let out an exasperated laugh.

"Of course I'm not pregnant Ronald! Besides, we haven't slept together in nearly five months, don't you think I'd have said something by now??" Ron made an exaggerated sigh of relief.

"Thank Merlin! I mean… I figured it wasn't possible but you know…. You said girl stuff so…" he shrugged sheepishly.

Harry just shook his head at the open newspaper in his lap, a tiny smile on his lips.

Hermione spent the rest of the weekend hanging out with the boys and finishing up homework. Harry and Ron proved to be a pretty good distraction, but thoughts of Snape and her upcoming potions class that week stayed in the back of her mind. She kept sneaking up to her room to pull his letter out of her side table drawer and read it again and again.

Severus' words were thrilling and torturous at the same time. His dirty talk made her prickle with embarrassment. It also made her want to rip off her knickers and hump the nearest object.

She wasn't sure how she was going to make it to Friday without orgasm. Over the last six months she had gotten used to touching herself at least once a day, some days several times in a row. It was as if she was making up for lost time- all those years worried about Voldemort and various other dangers, plus sharing a room with three other people hadn't really inspired her libido.

Now that she had truly discovered sex she obsessed over it just as much as she had anything else in her life, probably even more so. And Professor Snape's passion and dark intensity coaxed her flame into a smoldering inferno.

As the week wore on Hermione got more and more antsy. By Wednesday she wanted to tear her hair out. Potions class was looming and that just made her all the more anxious and then in turn, aroused.

How am I supposed to pay attention in class with him pacing around all ominous and sexy??

But despite her trepidation Hermione showed up to potions that afternoon sans knickers, like he'd asked. Logically she knew no one could possibly know, yet she still had the constant urge to smooth down her skirt and make sure it covered her completely.

"Are you alright, Hermione?" Ginny asked, "You're all fidgety." Hermione tried to relax her shoulders and look normal.

"Oh, yes I'm fine. Just… Trying to mentally flesh out my Midterms study schedule.." She gave Ginny a shrug and a small smile that she hoped looked nonchalant.

Ginny laughed. "I should've known. That's weeks away, Hermione!"

Before she could reply the classroom door swung open with a bang. Professor Snape stalked in with his usual flare and flicked his wand at the board without a word. Instructions appeared in his neat spiky print.

"A bit of a challenge for you today.. We shall see who can keep up.." He drawled, giving the class a hard look. Then he sat down at his desk and began to grade papers. The class only hesitated for a moment and then there was a flurry of movement as they all went to gather their ingredients.

Hermione tried her best to pretend he wasn't there as she prepared her workspace. That worked about as well as expected and she resigned herself to the fact that she'd never be able to fully focus in Potions class again. At least today he was finally assigning them a NEWT level potion.

She was sure she could excel in the brewing, but it did take a lot more focus than what they had been doing lately. About halfway through the class Snape got up and began pacing around the room, peering into cauldrons with a critical eye.

Hermione groaned internally. He had a way of sneaking up behind people when they least expected it. She was on high alert now, her stomach flipped with anticipation. She continued to stir her potion and willed herself to calm down.

Deep breaths Hermione. Don't let him get to you.

Suddenly she felt warmth at her back and she knew he was right behind her. She froze with a smothered gasp. His scent enveloped her and she closed her eyes briefly, breathing him in. Her eyes snapped back open when she felt him shift down to grasp her hand. His body pressed against hers and she thought her eyes might pop out of her head.

His large hand covered hers as she held the stirring rod in the bubbling liquid. She let him guide her hand to continue stirring in slow clockwise circles.

"Good." He murmured softly and a small shiver went down her spine. He let go after a brief moment and straightened up to stand beside her.

"If you'll turn your attention to Miss Granger…" Snape called out to the class, "She has the correct rod-handling technique…. You may learn something by observing her." Hermione kept up her stirring, but her breathing was slightly labored. A few of the Slytherins snickered from the back of the room.

Oh my God. Hermione's cheeks flamed. She wanted to disappear into the floor. Severus leaned over her briefly again and said, "See me after class" lowly into her ear. He then moved on to continue his monitoring of the classroom.

Hermione finished brewing her potion with her thighs pressed firmly together. As much as she had detested his public teasing, her pussy was clearly a fan.Traitor. She was thoroughly damp between her thighs and she was terrified someone might notice, as illogical as that was.

When class ended she packed up her things as slowly as possible. Once every student but her had gone, Snape shut and warded the door with his wand.

"Come here, Miss Granger." He called from behind his desk. His gaze was penetrating. Hermione walked over to him and he pivoted his chair to the side so she could stand between his spread legs.

"Let's see now… Have you been a good girl?" Severus asked as he slid his hands slowly up the back of her thighs. He smirked when he got to her bare arse.

"Yes sir." Hermione replied, sighing at his touch. He palmed the globes of her arse, massaging and spreading her cheeks wide. She groaned. Please touch my pussy, I'm dying.

"I have something for you, Princess." Severus told her and Hermione glanced down at her watch.

"Don't worry, I'll write you a late pass for Arithmancy. I have a free period after your class, no one will disturb us." Snape leaned back and motioned to under his desk.

"Go on, I got you a present." Under your desk? Hermione was confused, but intrigued. She crouched down on the floor and reached under the desk, pulling out the soft object.

A pillow? It was a small rectangular cushion, about two feet in length. The silky fabric was a deep green color.

"I know how hard the stone floor can be on one's knees." Severus was leering down at her.

"Well get over here, girl." He grouched, slouching in his chair to unbuckle his belt. "I've been thinking about that hot little mouth of yours all week and I can't get anything done."

She was pleased to know he had been thinking about her, too.

Hermione hurried to set the pillow in front of him on the floor and sunk down onto the cushion. It was much nicer than the cold hard stone. Snape's cock was already hard when he freed it from his trousers with a sigh.

"Make it quick, we don't have much time." He ordered. So, no pressure then?

Hermione grasped the bottom of his shaft and buried her face in his bollocks, breathing in his musky masculine scent. She tongued them each in turn, sucking each one into her mouth and then releasing with a pop. He grunted softly and she smiled against his skin.

Moving on to his cock, she flattened her tongue and lapped at him, determined to lick every inch of his length. When she had sufficiently covered him in saliva Severus grabbed a handful of curls at the back of her head and pulled her closer.

"Stop teasing me and suck my cock, witch." He growled.

Hermione was happy to oblige. In one smooth motion she took him in her mouth as deep as she could- which was only about halfway-before her gag reflex triggered. She paused where she was and took several deep breaths through her nose, trying to will the feeling away. Severus tightened his fist and pulled on her hair gently. Hermione hummed a soft moan over him in response and his cock jumped in her mouth.

She looked like a perverted princess on her pretty little pillow. He hadn't known it was possible to look sweet and innocent with a cock in your mouth, but somehow she was managing it.

"Yeessss." He hissed as she started to bob her head up and down over him with enthusiasm.

"Drain my balls, Princess."

"Mmmm" Hermione hummed around his cock. She was gliding her mouth over his length at a fevered pace, saliva was pooling out of her mouth and dripping down her chin. Her nose was starting to run with the effort. She didn't mind, she wanted to make him lose control.

Hermione closed her eyes and could almost pretend he was thrusting into her pussy. She clenched her thighs together tightly and wiggled around, desperate for some friction. Her pussy felt so empty it ached. Her pelvic muscles clenched over and over.Gods, if he doesn't make me come after this I might cry.

Severus was enthralled. He'd been fellated by a number of witches (and a wizard or two as well) but none compared to the performance she was putting on. What she lacked in skill and finesse she well made up for in enthusiasm.

Her face was a mess of spit, tears, and snot; It was downright pornographic. She looked like she might climax merely from wiggling her hips and clenching her thighs. He'd have to keep an eye on that- he didn't want her to come today. But it was something he'd keep in mind for the future.

"Fuck. Just like that…" Severus could no longer stop his hips from thrusting up to meet her. His words spilled from his lips in a breathless hiss, "you're my little come slut aren't you? I'm going to send you to your next class with the taste of my seed in your mouth."

Hermione's jaw was beginning to ache badly.Time to finish this. She reached out with one hand to squeeze his bollocks briefly, then moved farther back between his legs. She found his perineum and massaged it firmly with two fingers in a 'come-hither' motion.

She heard Snape groan loudly. Bingo. She kept up the perineal massage as she sucked him, focusing her mouth more on the tip and using her other hand to stroke the rest of his cock. She knew he was about to lose it when his fingers clenched hard in her hair and his thighs went rigid as stone.

Hermione looked up into his face as he came. His lip curled up into a snarl and he groaned long and low through clenched teeth as he emptied himself into her throat. She swallowed it all and then gently licked him clean as he twitched with aftershocks.

Severus had to sit back and catch his breath for several moments before he could speak. He felt as if she'd sucked his brain right out of him. Hermione stared up at him and rubbed her jaw, her chest was heaving with labored breaths.

"Please sir, touch my pussy, I need you." She begged him with wide eyes. She's more than earned it, he thought. But, no, he had told her to wait and he wouldn't go back on his word.

"Sorry Princess. You know you have to wait until Friday.. Besides, you're already over ten minutes late to class." Severus cracked his neck and then worked on buttoning himself back up. Hermione looked almost distraught, but didn't argue. Good girl.

"Come up here."

He patted his lap and she climbed up to straddle him. Severus summoned a wash cloth with his wand and dampened it with a quick aguamenti. He brought the cloth up to her face and gently wiped her clean.

Hermione felt a warmth deep in her belly from his ministrations. While she was dying for some sexual stimulation, she did enjoy him running the cool fabric over her face so soothingly. It made her feel special. She was starting to feel like he was two different people; Professor Snape who fucked her mercilessly and used her body for his pleasure, and Severus who treated her like she was made of glass, his most prized possession. And they both had a dirty mouth.

Hermione smiled and leaned into him, savoring the moment. When he finished wiping her face he set the cloth aside and held her face in his hands, bringing his lips softly down to hers.

Severus kissed her deeply. He could taste his own essence on her tongue. Hermione hummed into his mouth and wiggled her hips, earning a small twitch from his spent cock. He pulled away, much sooner than he'd have liked, and patted her bum.

"Up you go. I'll write you a pass." Hermione reluctantly left his lap and stood to his side, reaching up to pat her hair down. Snape glanced at her from the corner of his eye.

"Leave your hair alone. I like it the way it is." It did look a little disheveled, but she'd certainly had worse hair days, and he found he preferred it when it looked a bit wild.

He handed her the small bit of parchment he'd scrawled a quick note on. Then grabbed ahold of her hips and spoke lowly,

"You've been a very good girl. I'll see you on Friday, yes?" Hermione gave him a soft smile and nodded.

"Yes sir, thank you sir."

"Good, now get to class." Severus pushed her kneeling pillow back under his desk with one foot and then unwarded the door.

"One more thing, sir."

Hermione grabbed the damp cloth from his desk and used it to wipe up the stickiness from between her legs. When she finished she placed it in his hand and he raised one eyebrow at her, lips twitching with suppressed amusement. She grinned as she sauntered out of the room.

Hermione was in a bit of a daze during her walk to Arithmancy. Gods, that man is unreal. Her jaw ached and her pussy was practically weeping with frustration. But she'd get right back down on her knees and do it all over again right now if he asked her too. The hold he had on her was unbelievable. And it's only been a week!

That thought startled her. How could that be?? It felt like it had been ages longer. He was all encompassing in her mind.

Hermione opened up the folded parchment in her hands as she walked, and blanched when she read his words.

'Miss Granger was completing a quick job for me. Please excuse her tardiness. - S. Snape'

Hermione's face flushed. Oh, great she thought.