Chapter 3 - the one where he was bitten in lesson and swore like a trooper in front of his entire class.
"Fuck!" Charlie shouted. "Fuck, fuck, fuck!" He was dancing around clutching his hand.
"Professor Weasley!" Hermione scowled as she rushed over to him. "You're not supposed to use that sort of language in front of students!"
"No shit Sherlock but it fucking hurts! The little fucker fucking bit me!" Charlie raged, his face having gone a little pale and his stomach toying with the idea of emptying its contents.
"Professor!" Hermione admonished him fiercely. "Let me see..." she held out her hand and Charlie gave her a dubious look before setting his hand in hers, his palm facing up.
"Merlin Charlie! How are you still conscious!" Hermione cried, looking at her whimpering Professor with a new found respect and, albeit reluctant, curiosity.
"Ex dragon keeper, I've had worse," he grimaced as Hermione set to work tending to the very nasty burn in the centre of his upturned hand. He closed his eyes and tried to focus on anything but his scorched skin. Her ministrations were a welcome distraction from the pain and her fingers gripped his wrist confidently as she held his hand still. Slowly he felt the intense burn begin to subside and the sharp stinging dwindled down to nothing. He opened his eyes to find his hand almost completely healed and he marvelled at the amazing skill of the seventh year witch smoothing her fingertips across his palm looking for discrepancies. Hermione turned her eyes up to catch his and he found his breath catching in his throat at the beauty of her concerned gaze.
"Thank you," Charlie found himself croaking.
"No problem," Hermione murmured.
"Sir, is the lesson over or are we going to carry on now that Granger's had the opportunity to show off?" Pansy Parkinson snickered, an almost envious tone to her voice.
Charlie scowled at the girl and stood up, mustering all his teaching authority before opening his mouth. "Fuck off Parkinson, you're just jealous she's always been better than you."
The class stood looking at him with wide eyes and open mouths. Pansy sputtered and stuttered, outraged that she'd been spoken to in such a manner.
"Very mature!" Hermione hissed under her breath so only he could hear. If it wasn't for the slight upturn in the corners of her mouth, he'd have sworn she really was pissed at him.
"Worth it though," he mumbled, sending her a wink before looking back at the class. "Did anyone hear me say anything untoward or inappropriate to Miss Parkinson?"
"No Sir, at least nothing she didn't have coming," Dean Thomas grinned.
"You're a fucking legend Sir," Seamus Finnegan laughed.
"Yes I fucking am!" Charlie smirked.
"Charlie!" Hermione hissed again.
"Professor Weasley..." Charlie corrected her with a roguish grin.
"I am not calling you Professor if you won't act like one!" Hermione folded her arms in contempt.
"Fine, I hate being called Professor and Sir anyway." Charlie shrugged.
"You're insufferable," Hermione huffed.
"And yet you seem to suffer me quite nicely, wouldn't you say?" Charlie laughed as her cheeks tinted a little pink, making her that much more attractive to him. He groaned inwardly as the buzz got louder and the ache stronger.