Found this in my saved docs. Something I wrote many moons ago. It's short (sorry) but I thought it's something to read. Enjoy!
Dark!Klaus, way before Cami death and the birth of Care's twins.
Caroline was in OCD overload, what with the twins needing constant attention, the house that her and Liz shared was in shambles with toys, dirty linens, bottles that needed to be sterilized.
"Camden, please stop crying. You're gonna wake up Lilly. Here's your baba." Caroline tried to cradle and soothe the fussy infant. Once his gums came in contact with the bottle nipple it was nothing but pure blissful silence. That was until her cell rang.
With vamp speed, she answered before Camden could be disturbed. "This better be life or death, cause if it isn't I'm.."
"Caroline?"
That voice, the one she could never forget or would ever forget. The foreign purr of her name that escaped those lips was ingrained in her psyche.
"Klaus? Wha…"
"How did you do it? How did you manage your control during your transition? I'm…I'm just curious."
"Klaus, I'm busy right now and I don't see why you call me after all this time to ask me about my transition."
After what seemed like an eternity, Klaus finally answered her with what sounded like defeat in his voice, a sound that Caroline wasn't accustomed to hearing from him.
"She's not you, not even close, not even a little. Caroline, I thought I could replace your light with another, but all that proved is what a fool I am."
"Klaus, you're worrying me, please; what's going on? What do you mean not me?"
"Since I've moved to New Orleans, I've been chasing ghosts, mere shadows to your light. Caroline, I'm wanting to know how did you become a vampire but still kept the human side of you? Please, I have to know."
Caroline's mind left her current state of feeding Camden and into that day in the hospital, the day she awoke with an appetite like she had never experienced before. That night when she fed for the first time, the pain of sharp fangs emerging from her gums, the feeling of blood rushing to her eyes, the euphoria that came after the pain and hunger was subsided.
Yes, she could've gave in to the bloodlust and became a predatory killer, using her instincts to kill and feed. But if she had then she would've became a monster, a monster that enjoyed and hunt.
"Support, friends, family, my lingering respect for human life. I've seen the dark side of vampirism, been a victim of it. I know the pain of one side and pleasure of the other. Klaus, it isn't something I can explain to you and it make any sense to you. It's just who I am."
With a long sigh of defeat, Klaus gave her an answer that chilled her "I've met another with hair of gold, eyes of love, I thought that maybe I could replace you but all I've done was to make another you to replace that hole in my dead heart. I have to know how to replace you, Caroline. The light in her is gone, gone like a star that dies out. I love you so much, Caroline that I see you everywhere, paintings, in a line a the most sweetest poem. She isn't you!"
Camden's bottle was starting to empty out, Caroline was shaking on how lonely and defeated he sounded.
Her hand trembled almost making her drop the phone. "Klaus, you're scaring me, you can't make someone into what their not. Please, let this soul go. Please Klaus."
"Sorry, love. Sorry to have bothered you. By the sounds of it it would seem that Camden is ready to be burped or in need of more milk."
"Wait…Klaus…where are y…."
Klaus ended his call with Caroline. Looking over at the blonde standing by his side staring off into the night's darkness. "Sorry, sweetheart. I couldn't get the answer we needed. But you won't have to worry no longer. I'm gonna release you, not to the heaven that you think exists but to the eternal darkness that befalls us all."
"Klaus, what…"
Crack! That was the last thing he heard and the last thing she felt as her body fell to the ground with a hard thud.
"Caroline, my sweet Caroline. Soon" Klaus thought to himself as he stared at the blonde nervously cradling the fussy infant.