A/N: Hey guys! So this was my very first story on and this is my first ever vampire diaries story. It is a Klaus/Oc and I really hope you like it. The story is currently in its editing process and it has no ending, but should do in a few months time. Thank you so much for reading and please leave a review to tell me what you think!

Prologue

~1920's~

He searched for her. Regretfully, he had had to leave her behind. Now, he was desperate to find her, to make sure she was safe.

Klaus didn't know what it was about Eliza Petrova, but there was something about her that made him love her. She was beautiful, loving, sweet, innocent and very vulnerable. The complete opposite of him. But, he had fallen for her, and he loved her like he had never loved anyone before. Luckily, she wasn't a doppelganger, but the sister of one. He didn't need to kill her to become a hybrid. He would never harm her in any way.

Earlier, he had lost her in all the commotion, and he had to escape before Mikael, his father, found him. Now, he was searching the abandoned bar that was littered with glass. All of the windows had been smashed. Stefan Salvatore had already disappeared from the spot that Klaus had left him earlier, and his sister's necklace along with it. A few unrecognizable, lifeless bodies were scattered across the floor. Being deep in thought, searching around the bar, had almost come to the conclusion that she had managed to escape and was perfectly fine. That was, until he saw the familiar looking body.

Cautiously, he approached it, unable to believe that it could be his Eliza. But, as he came closer, he realised that it had to be. Her long, soft, curly, brown hair. Her pale, smooth complexion. The most innocent, soft features of her face. He looked down at her unmoving body, staring for a moment, unable to process what he was looking at. Tears started to well up in Klaus' eyes. He collapsed by her body, spotting the beautiful, ancient locket that still laid around her neck. It had been a small gift that he had given to her only a few days ago. He unclasped the necklace from her neck and placed it around his own. He then took Eliza's body into his arms, noticing her head laid in a strange position. Her neck had been snapped in a way only capable by that of a vampire.

Endless amounts of tears spilled from his eyes as he rocked her body back and forth in his arms. He had hoped that when he had seen her again, that her eyes would have been open and lively. That her lips would be colored red with her favorite lipstick, not these cold, dull ones before his eyes. That she would still be breathing, and her heart would still be beating. But it wasn't. She was dead. Eliza was dead.

"This is all my fault…"' He tried to cry out, but his voice could only muster a whisper.

After those short minutes of being there with her, holding her, he despairingly forced himself to move away from the body. He knew that he couldn't bury her himself, it was far too painful. With a final kiss on the lips, he reluctantly exited the bar. Overwhelmed with the intensity of all of his emotions, he broke down, sobbing and shouting at the same time. The despair, the rage, the guilt, the grief. It was all unbearable. In that moment, Klaus vowed to never love anyone ever again.

~2011~

Klaus happened to be at the decades dance, eager to catch a first glimpse of the doppelganger he planned to use. He had his witch and the moonstone, now all that was left was a vampire, a werewolf and a doppelganger. Luckily, he had managed to steal the history teacher's body, who surprisingly turned out to be a vampire hunter. No one had discovered that he had claimed Alaric's body yet, but tonight the Salvatore brothers, the doppelganger, the witch and their friends were trying to locate him.

After a few glances around to try to spot the doppelganger, who he soon learned went by the name of Elena Gilbert, his eyes came upon one of the Salvatore brothers, dancing in the center of the room. With him was a girl who looked exactly like Katerina Petrova. He smirked as he realised that he had finally found her. Suddenly, Elena glanced over at him, and he caught her eyes for just a short moment. But instead of smiling as he usually would have, anguish filled every ounce of his body. Elena's eyes, they were the exact same colour as... Klaus didn't even want to think of her name. Eliza. No matter how much he tried, he could never seem to rid the agony of his loss. That constant agony he had grown accustomed to after all these years.

'It was in the 1920's, she died. How could she have passed so long ago?' He wondered to himself, his heart being split into two.

Eliza's beautiful, chocolate brown eyes were still a vivid memory in Klaus' mind. Seeing those same eyes on Elena, it flooded back the memories, making his head spin. He still hadn't forgotten about her, and never would.

Klaus would always and forever hold her dearest to his heart. Eliza Petrova, his long lost love.