"What the hell do you think you're doing with her, Klaus?!" Caroline screamed at the man before her.

Over a week had passed since she had mistakenly walked in on his illicit kiss with her boyfriend's younger sister and this was the first time she had chance to call him out on his actions. Klaus had done a good job at avoiding the blonde-haired woman since that night but his luck had run out. When he had opened the door a few minutes earlier to find Caroline standing in front of him, he had let out a groan. He knew every word, every argument, she would have for why his relationship with Charlotte was wrong but he had no intention of listening to her. Klaus was enjoying the time he spent with Charlotte, both in and outside of his bed, even if they weren't really a couple in the traditional sense.

"It really isn't any of your business, Caroline."
"She's a teenager! She's barely even legal! It's practically jailbait!"
"What's your problem, Caroline? She's a consenting adult who gave me her permission. We're not doing anything wrong." Klaus argued.
"Maybe not legally, but how do you think Damon and Stefan are going to react when they find out?"

Klaus knew she had a point. If his own sister had entered into such an arrangement when she was Charlotte's age he certainly would not have been happy about it.

"They're not going to find out because you're not going to say anything to anyone."
"Klaus, you're asking me to keep a secret from Stefan; to lie to the man I love. I can't do that."
"Yes you can and you will. If not for me, do it for Charlotte."
"Klaus…" Caroline groaned. She did not want to see any kind of harm come to Charlotte and telling Stefan and Damon about her sexual relationship with their best friend would only lead to drama.
"Please, Caroline."
"Urgh, fine! But you had better stop whatever it is you're doing with Charlotte and stop it soon. It's only going to end in tears if it goes on any longer."
"Point taken."

With that, Caroline turned on her heel and left Klaus's apartment as he returned to his bed and to the girl waiting for him.

"Are you okay, babe?" Stefan asked his girlfriend.

It was near the end of October and he had noticed she had been acting strangely for most of the month. Initially, he assumed she was upset about something he had done but after her many reassurance that he was the perfect boyfriend and had nothing to worry about, he had discarded that thought. Yet, he could still sense that something was bothering her and he was beginning to become concerned about her wellbeing.

"I'm fine, Stefan." Caroline smiled her best smile at her boyfriend and hoped he would believe her.

It was not that anything was wrong with her, per say, just that she was racked with guilt for keeping a secret from him. Although it was not her place to tell Stefan about the secret, sexual relationship between his only sister and his childhood friend, she was finding it incredibly difficult not to tell him. The only thing stopping her was her concern for Charlotte. The young girl did not need the stress that would come from her antics with Klaus becoming public knowledge.

"I'm just tired. Work is exhausting."

At that moment, Charlotte ran down the stairs catching the attention of Caroline and Stefan with the loud bangs on her feet on the wooden stairs.

"Where are you going?" Stefan questioned his sister. She had hardly spent a minute at home in the past two months.
"I'm off to Emma's. I'll be back before curfew."
"Charlotte…" Stefan began but did not finish as Charlotte disappeared through the door without even a word goodbye to her brother or Caroline.

Stefan frowned before turning his attention back to Caroline; putting his arm around her and pulling her in close as they made themselves comfortable for the film they were about to watch.

"I don't know what's gotten into her. She's barely ever here."
"She's a teenage girl, Stefan. We're a mystery to you guys." Caroline replied. She had her suspicions that Charlotte was on her way to Klaus's and not her friends, as she told her brother, and this made Caroline uneasy.

"Hello, love."

Klaus smirked as he opened the door to Charlotte and moved aside so she could enter. He had something special planned for the girl tonight and he was sure she would find great enjoyment in it, as would he.

"Hi." Charlotte replied with a naughty smile. She had purposefully worn a dress, despite the cold weather, as she knew it would cut down on the time-wasting and Klaus preferred to have easy access to her.

Charlotte looked up at Klaus and into his eyes, seeing them already turning black with lust, and began to walk slowly backwards as Klaus backed her against the wall.

"I like this dress It looks good on you." Klaus murmured into Charlotte's ear as he fingered the hem of the thin, black material. "But it would look even better on my floor."

A second later, Klaus was clawing at the dress in a bid to remove it and seek the soft, tantalising flesh beneath. Containing himself around Charlotte had become quite a problem for him over the previous weeks as he found himself becoming more and more attached to not only her body, but the girl herself.

It took less than a minute for Klaus to remove every article of clothing Charlotte had worn upon entering his home and he stood back a little in order to observe her in all her naked glory. He could feel his arousal reaching a fever pitch as he raked his eyes over the girl before him.

"Stop staring at me and take off your god damn clothes." Klaus heard Charlotte say with a pout.

She made no attempt to cover herself up in any way and Klaus once again enjoyed how confident and bold she was. He really was becoming addicted to Charlotte and a part of him feared he would never be able to give her up.

"So eager, love."

Klaus said before pressing his lips against hers and using his tongue to softly force upon her mouth so he could graze his tongue against hers. The small moan that escaped Charlotte sent a spark of desire straight to his already hardened length and he pushed himself against her in desperation.

"Seriously, take off your pants." Charlotte demanded as she broke the kiss.

Klaus lifted his v-neck jumper from his body, throwing it across to room and unbuckled his belt; removing his jeans and boxers in much the same manner as his jumper. He noticed the look of appreciation and lust that crossed Charlotte's beautiful features and he smirked smugly. The affect he had over Charlotte never failed to please him.

Charlotte jumped and wrapped her legs tightly around Klaus's waist as he carried her to his bedroom; his erection pressing against her. He did not even break the position as he skilfully lay her lay on the bed and continued to kiss her roughly.

"I have something for you, love." Klaus whispered to Charlotte.

He could already feel how wet she was for him and it pleasantly surprised him she was so easily ready. Klaus pushed himself into Charlotte's hot core just a few inches; revelling in how effortless of a move it was for him. A loud moan escaped Charlotte and she arched her back in a bid to take him in further.

"Be patient, Charlotte." Klaus stated with a smirk as he observed the look of disappointment on Charlotte's face when he pulled out of her. "You're forgetting about your surprise."

Rolling off her, Klaus opened the top draw of his bedside table and pulled out two long pieces of thick satin-like material. He watched her eyes like up in understanding and anticipation and gently fastened the material around both her wrists and bound her to the bars on his bed; securing her in place before moving back down to ravish her.

Daylight seeped through the window and penetrated through Klaus's eyelids; leaving behind a stinging sensation that made him groan out loud a little. Opening his eyes slowly, Klaus blinked a few times to help his eyes adjust the dim light of the room and turned his head. Charlotte was sleeping peacefully besides him; her chest rising and falling softly.

He let himself enjoy the sight of her before cursing quietly to himself. Charlotte had never before stayed the night. It was a rule they had to ensure they did not caught and they had well and truly broken it. Klaus could only imagine the accusations that would be thrown at her once she finally returned home.

The clock told him it was already past eight and although a weekend morning, he knew Giuseppe and Stefan would be up soon and would eventually inquire as to Charlotte's whereabouts. Klaus tried to make himself wake the sleeping girl but he couldn't bring himself to do it. Allowing himself to imagine what it would be like to wake up next to her every morning, Klaus curled his arm around Charlotte's waist, pressing their bodies tightly together, and waited for her to wake.

Finally, an update! :) Enjoy and please review my darlings xxx