Hermione froze in shock the second her professor's mouth crashed to hers.

She felt like she had a million thoughts hammering through her head at once, and her body had shut down in response. She struggled for a moment to turn her thoughts from incoherent slush into something that made sense.

Professor Snape was kissing her. Herself - Hermione - who had been, from her understanding, one of his least favourite students.

The last half an hour since her outburst, he had begun acting… different. He had eyed her like a wolf eyed its prey, hungry and observant. And then, he began complimenting her. Something she had craved for years, and he was finally doing it. He had even said he liked her hair down the way it was, something even Ron had never told her before.

She inwardly scoffed at herself for comparing Ron to Snape. There wasn't really a comparison, Ron was an overgrown child, insecure and rude and constantly in need of mothering. Snape was... A man. He was self assured and capable and when he had stood inches from her, she could practically feel his power and dominance radiating from him.

Hermione was still frozen, as Snape's mouth moved against hers, reminding her where she was. She was still as one of his cool hands gently caressed her cheek, the other moving up to grab the back of her hair, tilting her head upwards to deepen their kiss.

With this, Hermione's eyes fluttered shut, and she melted into him. She began to kiss him back eagerly, relishing in the fact that she was kissing her potions professor.

She felt Snape's lips form a curve as he smirked with satisfaction, one hand moving down to her hips, firmly gripping her to pull her closer into him as he rested against the desk. Hermione kissed him hungrily, every one of her senses alight. She could smell his musky scent, a mixture of wood smoke and a mysterious blend of spices and herbs, and something uniquely his own.

His lips moved against hers with no hesitation, confident and commanding. Hermione couldn't help but compare him to her only two other kisses - Krum, who had been overly gentle and cautious knowing she had never kissed anyone before, and Ron, who had attacked her mouth like a wet fish.

This was how kissing was supposed to feel, she realised. There was no uncertainty. Snape's tongue slipped between her lips, circling her own with controlled intensity. Hermione surrendered herself fully to him, moving at his pace and practically dissolved in his embrace.

His grip tightened in her hair, pulling her head back from him as he bit her lower lip gently. Hermione moaned into his mouth, which encouraged him further, as he pulled her closer to him, onto his lap.

Hermione's eyes flew open as she felt his arousal firm against her through his trousers, struggling against desire and the fact that she knew this was wrong - he was her professor, twice her age.

Snape felt her stiffen in his arms, and drew back, hand still gripping her hair as he searched her eyes, his own eyes hooded with desire.

She bit her lip, torn between desire and worry of going too far. "Professor… I'm sorry… Maybe we should stop.."

Snape only surveyed her with a smouldering intensity, his hand gripping her hip even more tightly. "Granger, your detention is not over. I have a… more special assignment for you. I know you don't want to disappoint me now."

Hermione groaned as anticipation coursed through her veins, her breath catching in her throat. She nodded, her eyes locked onto his, her curiosity piqued and her desire unmistakable.

"Good girl. Now," His lips trailed from her mouth down to her neck, kissing her lightly and gently nipping her pulse point as she shivered in his arms, "I want you to get on your knees for me. Understand?"

Eyes widening, Hermione swallowed her nerves and nodded obediently, lowering herself to the ground as Snape leaned back against the desk.

She looked up at him, shaking in anticipation as he swiftly unbuckled his belt. "You're so obedient for your professor, aren't you Granger?."

Hermione blushed at his words, but raised her shaking hands to undo his zip. As she freed his erection, her eyes widened at the size as it sprung free, larger than she had ever expected.

She gripped it gently, cautiously running her hand with wonder over the thick and silky shaft. Her potions professor moaned at the sight, reaching down to grab her hair. He pulled gently, forcing her into position for his next command. "Now, suck on my cock, sweetheart."

Hermione eyed his member nervously, but moved her head forward, running her tongue cautiously over the tip.

Snape hissed softly through clenched teeth, both hands gripping her hair tighter, guiding her movements as he pushed deeper into her mouth. "That's it."

She felt like her mouth was already full, but, encouraged by his words, opened her mouth wider to take more. She moved her head back and forwards, Snape's hands guiding her gently.

"Fuck, yes." Snape groaned, his hips bucking softly against her mouth. Without warning, he pushed his cock as deep as he could, hitting the back of her throat. She fought to keep from gagging, eyes watering, not wanting to disappoint her professor.

Feeling her struggle, Snape pulled back slightly, giving her a chance to breathe. "Slowly, take me deeper," he commanded, his voice rough with lust, "Show me how well you can take my cock."

Hermione nodded obediently, taking him back in her mouth, more prepared this time. She allowed the tip to hit the back of her throat as she sucked him, encouraged by the moans escaping from the man in front of her. She loved the fact that she was the person making him sound like that, hoping it meant she was doing a good job.

Suddenly, her professor pulled himself out of her mouth, pulling her up to face him. He grabbed her face and kissed her even more hungrily than before, spinning her to pin her against the desk. She could feel the cold wood pressing into the back of her thighs, as he grabbed his wand and muttered a spell.

At his command, she felt her shirt fly open and off of her, leaving her in nothing but her black bra and school skirt and socks.

He eyed her appreciatively, taking off his own cloak so that he was down to his fitted shirt and trousers, his erection still upright and free. She felt herself warm as his eyes roamed her body, reaching his hand up to unclasp her bra. Before she had time to feel too bashful, however, his hand lowered, cupping her breast and squeezing firmly.

"Beautiful." He muttered as he drank her in her exposed body, his eyes dark with desire.

He leaned down to capture one of her nipples between his teeth, the other reaching between her legs, teasing her through her underwear. She felt a jolt of electricity at his touch, somewhere no one but her had ever been before.

"Now," He said, his voice low, "I want you on the desk, legs spread wide."

Hermione's heart hammered in anticipation. "Professor," She bit her lip, not wanting to ruin the moment, "I've never actually.. Done this before." She looked at him, biting her lip.

Snape's eyes flickered with surprise at her confession, but it didn't deter him. In fact, it only seemed to fuel his desire, his gaze hardening as he pressed more firmly against her. "I'll be gentle."

She looked up at her professor, nerves calming under his authoritative presence. Although she never expected this to happen, she knew that she was ready.

Nodding, she spread her legs wider for him, lying back on her elbows on the wooden desk.

"Good girl." Snape praised as he took off her underwear, before kissing her softly on the mouth. He lined himself up at her entrance, taking his time to rub against her slickness before easing his cock in, slowly and gently stretching her.

Hermione squeezed her eyes shut, feeling a mixture of pain and pleasure as he edged himself further into her. She could feel herself expanding to accommodate him, and with a final thrust, she felt completely full of him. He stilled, now fully inside, his hand moving down to explore her sensitive spot.

With this, Hermione moaned loudly. She had never felt so completely full, and with this he started moving again, bucking his hips slowly against her as he moved in and out.

His fingers moved with expertise, coaxing more and more noises out of her. She found herself succumbing to the pleasure as she groaned even louder, eyes flying open to look down at where they were joined. It looked perfect, his pale and strong physique moving against her own tanned body. He enveloped her, twice her size. One of his hands was gripping the desk, holding it still as it's legs shook beneath them.

Her eyes moved to his, where she found him surveying her every movement to see how she responded. He had the same look in his eyes as he did when he was brewing a particularly complicated potion, she noted, completely entranced and focused. Despite herself, she blushed under his gaze, and wondered if she was doing everything right.

"I.. Professor?" She said between moans as he continued to thrust into her.

"Mmmm, yes Granger?" He asked, not taking his eyes off of her or slowing his pace.

"Am I.. Am I doing everything right?" She asked, immediately regretting her foolish words. She sounded like nothing more than an inexperienced little girl.

However, he only slammed into her harder, his lips moving to her neck. "You're always so eager to please, aren't you Granger? That's what I like best about you." He murmured into her neck, moving up to nibble her earlobe as he whispered, "You're always so eager to learn, and you never disappoint." His hips slammed against hers, driving his cock deeper still. "Now, be a good girl and show me how much you love it."

Hermione gasped as his cock slammed into her cervix, his fingers still moving against her clit. She felt a fiery heat building in her abdomen, as she moaned, "That feels so good, Professor, please keep going."

Snape smirked at her, "Oh, I intend to," He growled, before pulling out completely. Hermione frowned and cried out at the sudden loss of sensation, but he captured her mouth in a deep kiss, pressing her down under his weight.

"Remember, tonight isn't about love or affection, but pleasure, and I intend to give you plenty of it. Do you understand?" His voice was laced with arousal as his fingers curled and stilled against her clit.

"Yes, Professor, I understand - please just keep going." Hermione moaned desperately, writhing under his touch.

He chuckled darkly, "You're such a smart girl, Granger. You deserve to feel good, don't you? Tell me what you want."

Hermione felt like she was starved of his touch, pent up with frustration and she burned for his touch. "I want you to fuck me, hard until I cum." She moaned, too aroused to feel embarrassed by her blunt words.

"With pleasure." Snape's eyes were black and dark with desire as he once again pistoned into her, his hands moving in circles around her clit.

"Yes! Like that, don't stop!" Hermione cried as once again she felt her heat build up, her breasts bouncing as she threw her arms around her professor's neck and met every thrust.

"Such a good girl, cum for me now, Granger." He kissed her deeply, gripping her hips as he slammed into her harder still.

With this, Hermione felt her desire snap, and she collapsed against him, bliss washing over her as he took her over the edge.

"Fuck." Snape groaned as he watched her pant beneath him.

He suddenly picked her up and pulled her off of the table, ignoring her confusion as he instead spun her around, so that she was bent over the desk in front of him.

He slapped her ass before gripping it firmly, once again lining himself at her entrance before entering her again in one fluid motion. He didn't start slowly this time, instead pinning her arms behind her back and pushing her face into the hard tableas he looked down and watched himself slam into her over and over.

"That's right, my little clever girl. Take my cock." He gripped her hard as he pistoned in and out.

Hermione moaned as she recovered from her post orgasmic bliss, feeling him even deeper inside her in this position. She once again felt heat build up inside her, moans escaping her mouth freely as the front of her thighs pressed against the wooden desk.

"Granger," Snape panted, his voice thick with lust, "You're so tight around me… I can feel you clench around me… I can tell you love this, don't you?" His hand gripped her hip tighter.

"Yes - Professor.. Mmm that feels….so good.." Hermione gasped as she struggled to get her words out between thrusts.

"It will feel even better when I cum inside you, and " he promised, his hips moving faster. "You're going to feel every last drop. Is that what you want?"

"Mmm, yes!" She moaned underneath him.

He suddenly grabbed her hair, yanking her up towards him. "Yes, what?" He grunted in her ear, still slamming into her.

"Yes, Professor, please cum inside me!" Hermione cried desperately.

Snape chuckled at her desperation, pulling her hair harder. "You're mine now, aren't you?"

"Yes, Professor, I'm yours." She moaned, before crying out in pleasure as she climaxed again.

Snape moaned at the sight of her undoing, and with that, slammed into her a few final times, groaning as he emptied himself deep inside of her.

Hermione collapsed onto the desk in pleasure, feeling her potions master's cum dripping out of her and down her leg. Snape rested on top of her, catching his breath.

"Granger," He panted, leaning on the desk beside her. "You were… an excellent student tonight. So attentive, so obedient."

She turned to face him as he helped her up from the desk, before once again caressing her hair. He smirked at the sight of her, naked and sweaty and thoroughly claimed by him. "However, I still haven't addressed you losing your temper at me earlier on. That won't do… I think another detention next week is in order."