Hermione stood, fully nude a few steps away. Her form; perfect. Her exquisite hourglass figure beautifully accenting her small, perky breasts and clean-shaven mound. One had reached down between her legs and ran along her folds. Sighing gently, she began moving faster and faster until…

Harry woke suddenly, immediately disappointed that his reverie be disturbed. He looked around the dorm - all of the other boys still slept. Grimacing to himself at the discomfort he felt downstairs, he felt down the front of his boxers to check. And sure enough: the wet, slimy puddle with which he had become accustomed since moving back to Hogwarts was there in all its disgusting glory. The first time this had happened he had been worried he'd wet the bed, but it was obvious enough that this mystery fluid was something else, though he had no idea what. Only that it always seemed to accompany a dream containing Hermione or Ginny. Or Luna. Or Cho, Parvati, or to be honest any girl - usually naked or not far from it. Which was strange, seeing as though he had never actually seen a girl naked before, nor did he have any romantic feelings for Hermione, or anyone.

Creeping downstairs to the bathroom, he found some tissue and performed his near-nightly ritual of trying to clean the fast-drying stain from his softening penis and underwear. Having done as good a job as possible, he tip-toed back to bed and fell quickly asleep.

***The Following Night***

Ginny cried out as she arched her back off the bed, her glorious figure hidden under a thin nightshirt, nipples just poking through. Her pure, innocent face contorted and tensed as her fingers moved up and down beneath her white cotton pants; the swift, precise movements of an experienced girl. Moaning and blushing, she slowed her hand until it came to a stop - removing her hand and sucking her fingers clean - her pink face glowing with satisfaction…

Disturbed again by the uncomfortable hardness and wetness in his boxers, an annoyed Harry made his pilgrimage downstairs to clean up. As he silently entered the common room, the torches around the room suddenly synchronously lit, throwing the room into a blinding light, catching him off guard.

"Harry, it's you!" Came a familiar voice.

"Yeah, of course it is!" His eyes struggled to adjust as he searched the room for his assailant.

"I should have known, really. I mean, who else was it going to be?"

Finally, a familiar face came into focus.

"Hermione! What are you doing down here at this time?"

"I've been trying to catch whoever was sneaking around every night - I thought it was a Slytherin, I wasn't expecting…"

"Well you caught me, well done." Harry - very self-conscious of his potentially embarrassing predicament - had been trying to end the conversation and step around his friend to the bathroom. Unfortunately, Hermione was having none of it.

"What are you doing here?"

"What?" He tried again to step around her, but she stubbornly refused. "Just a… bathroom… thing…" He looked at the floor, blushing slightly. Hermione eyed him suspiciously, but eventually allowed him to enter the bathroom. Grateful for the unpleasant exchange to be over, he spent a good five minutes getting himself clean before calling it a job done and heading back into the common room.

"I don't believe you."

"Christ, Hermione!" Harry jumped again.

"Every single night, around the same time…? Must be something going on. Something you're embarrassed by, too."

"I'm going to bed."

"There's something you're not telling me."

"It's late…" He pushed past and almost sprinted up to the safety of the dorm. Climbing back into bed, he tried to get comfortable, but his thoughts kept wandering to his brunette friend stood assertively before him - in her cream-coloured pyjamas. Her perfectly-sized breasts hidden beneath her top, framed by her untidy hair. Desperately trying to imagine her naked, but unsure what a naked girl looked like, he settled on picturing her in her underwear - he felt the uncomfortable hardness return to his penis. A regular occurrence, he still wasn't sure what to do about it; he just had to leave it to go down on its own. Waiting patiently, he eventually slipped back into a calm slumber.

Rising the following morning, once again hard and damp (but at least not covered), Harry rushed to get dressed so as to hide from Hermione by getting to breakfast first. Luckily for him, she was nowhere to be seen, so he was able to enjoy his bacon and eggs in peace. The full day passed, and she was still absent, even from her timetabled classes. Trying not to think on it too much, Harry carried on with the day, finally collapsing into a common room sofa after dinner.

"Any idea where Hermione is?"

"How should I know?" Replied Ron from behind a copy of the Daily Prophet. "Probably went to the library before breakfast and forgot about the rest of the world."

"Yeah, probably." Harry lost himself for a moment in a daydream featuring Hermione in her underwear. "I might turn in; another busy day tomorrow."

"Sure, g'night."

"Night."

Changing quickly, Harry determined not to dream shameful dreams about his friends tonight, and to actually get a good night's sleep in preparation for the Quidditch tomorrow. He switched off the light, rolled over and thankfully slipped straight to sleep.

Hermione sat fully nude on her bed, legs spread slightly, her back propped up on the pillows. Her had reached down and covered her privates; she let out a slow sigh and turned slightly pink in the face as her fingers began to touch the sweet, sensitive area beneath them. Her other hand moved down to join in, holding her hairy lips apart while she rubbed gently with her open palm. Before long, her head rolled back and her face flushed, her thighs began twitching, her feet lifted off the bed and her stomach tensed revealing a faint six-pack. She quietly let out a low, guttural moan as she climaxed, but her fingers carried on…

"Ugh, again!" Harry looked at the clock, half past eleven as usual. Hermione would be waiting for him. Grumpily, Harry got out of bed and traipsed down to the common room. Sure enough, it was already lit when he got there, Hermione got up from the chair and Harry tried his best to hide his private area from her.

"Hermione, please…"

"I spent all of yesterday in the library-"

"We guessed."

"And I think I know what's going on."

"If you could tell me, that would be great because I've got no idea."

"Great, so…"

"After…" He looked down.

"…"

"…"

"Oh! Of course, I'm so sorry!"

Harry rushed into the bathroom, nervous about what he assumed was about to be a very embarrassing and sexual conversation with his closest female friend.

He was his hands, took a deep breath, and went back out to Hermione.

"I assume you come down here every night to… clean up?"

"…Yeah."

"And you don't know…?"

"What it is or why it happens, but you really don't-"

"Okay. So. I did some reading and all boys (and girls) go through this at our age. Do you… dream… about sex?"

Harry was bright red in the face by now, and looking intently at the floor.

"…Yeah."

"So apparently this is perfectly normal. Because our bodies are filled with hormones we can't control… these things. So during an arousing dream, the arousal is enough to actually cause an orgasm."

"That's… sperm?"

"Semen, technically. But yes."

"Gross!"

"Not gross."

"You don't think so?"

"It's just biology, Harry. Nothing to be ashamed of."

"Is that it?"

"That's it."

"So how do I stop it?"

"Wait three more years?"

"Ugh, gross!"

"Or… one… avant-garde book did suggest… um… you know?" It was Hermione's turn to blush now. "Masturbation."

"Mast-er-what?"

"You know… causing yourself to orgasm."

"But if that's the problem?"

"It helps." She blushed again, before adding quickly: "apparently."

"Apparently?"

"I mean… er…" Blushing and looking everywhere but at Harry, she stammered: "I may also, have these problems, and, uh, the book gave advice on how… so…"

"Can I see this book?"

"It was aimed at girls…"

"Is it different?"

"I think boys just get a tissue… and… you know."

"Right." Suddenly aware he'd just asked Hermione how to make himself ejaculate, he decided it was time to leave. Talking about this, and seeing her in her pyjamas can caused his boner to return, so naturally he blushed and tried to ignore Hermione's smirk as he turned to hide himself.

"Tell me what it's like!" She called after him, becoming aware of her own underwear situation.

Harry raced upstairs and climbed into bed, instantly realising he didn't bring anymore tissues. Too late. He couldn't go back down now, he'd just have to make a mess and deal with it later. There was no way he could sleep now: Hermione had just admitted that she needed to touch herself just to function.

Making doubly sure everyone else was asleep, Harry pulled his trousers and boxers off and stared at his fully erect, small but still growing penis. Unsure what to do, he ran the tip of his fingers along the length. He felt an ever-so-slight spasm emanate from the tip as his skin was pulled back. It felt amazing! He kept rubbing, imagining Hermione doing the same thing to herself across the hallway. She probably was! Grasping his penis in a loose fist, he moved up and down, breathing deeper as he did so: he'd never felt such a good feeling from his body! Trying to be quiet, he began moving faster and faster until his hand was a blur. Keeping going, keeping his fantasy of Hermione in focus, his dream Hermione had her hand down the front of her pants and was furiously matching his movements. It caught him off guard: his penis suddenly became very very sensitive and he held his breath as his hips shook. A tiny dribble of semen leaked from the end of his dick, not nearly the amount he usually had to clean up. But then this was his second time tonight. Letting go of his member, he slowly let out his breath and recovered. Why was he only just learning about this? This is the best he'd felt since… since the dreams started! And to think Hermione did this too!

Having cleaned himself up using his boxers, he rolled into bed and tried to savour the tingling sensation in his privates, but he was asleep within minutes. The most relaxing sleep he'd had in ages.