Imagine Klaus finding out you hunt vampires with Jeremy even though he thought you can't protect yourself

 For the past year, you had been keeping a secret from your boyfriend Klaus. For the past year, you had been slaying and slaughtering vampires, alongside Jeremy Gilbert, to protect your friends. Obviously most of your friends were vampires, but you wanted to get rid of the evil, bad ones who threatened your loved ones. Most people were afraid that you'd turn on your friends too, but so far, things were going just great.

 Jeremy and you were a dream team, together you kicked ass and with all your weapons, killing vampires was so easy you could do your nails at the same time. You were a professional, so was Jeremy, and your hunter marks were already nearly complete but it didn't matter to you. You didn't tell anyone, since no one but you two could see them anyway, and the meaning of it was irrelevant to you. You just wanted to keep your friends safe, and together you two succeeded flawlessly.

 There was one thing about keeping a secret though, that made it hard. Not only was lying to the love of your life awful, but he constantly underestimated you and took you as some weak little girl, incapable of protecting herself when in reality, you were the absolute opposite. You wanted to tell Klaus, but you didn't, because by now you were just too far and too deep in, and things turned out just fine even if he wasn't aware of your job of a kind. You loved him even if you didn't share the whole truth of who you were, and he loved you too so you didn't see a need to fess up.

 But things were going to take a turn to worse, quite quickly, too.

 "Y/N, we need to kill someone", Jeremy on one day blurted out, preparing some weapons. You had just arrived at his place, a small, suspicious apartment he had bought a few weeks ago, which was also where he hid his secret life of a hunter. You rolled your eyes while crossing your arms, and leaning back on your seat - there was always someone to kill.

 You looked at Jeremy as he hid some stakes up his sleeve and as he put on the dark, long coat, managing to double up the drama in him. "It's Kol", he then added and turned to you, holding a shotgun in his hands. While Jeremy just grinned, happy to kill an Original, you unfolded your arms and jumped up in shock and disagreement. You shook your head, and bit your lower lip, not wanting to do this. You usually never walked away from a challenge, but this wasn't only absolutely dangerous and risky, but it was Klaus' brother. Your boyfriend's brother.

 "No", you immediately let out, "no, I'm not doing that, Jer. You know me, I would do almost anything for you, but not this. This is Kol, the brother of the love of my life, and I can't just kill him. Klaus would kill me", giving Jeremy an apologetic but stern look. "And neither will you. Kol will beat you, so promise me you won't do it", you added and forced the Gilbert boy to give you his word, which he did.

 But as you walked out of his apartment unhappily, you knew he wouldn't keep it.

///

 You and Klaus were cuddling later in the evening, holding hands and watching your favorite movie for the millionth time but for you, he'd watch it every day. He was caressing your hair, kissing your cheek and holding you like you were a precious angel that should be protected from everyone and everything at all costs. If only your boyfriend knew what a badass you were.

 "Nik, I need to tell you something. I think Kol might be--", you started then when the movie ended, but you were interrupted by your phone ringing. You groaned, and gave Klaus an apologetic look, but he insisted on you answering so you did. Without looking at the called ID, you placed the phone on your ear and greeted whoever had bothered to interrupt your moment with Klaus. A rather important moment, too. You were pretty certain his brother was in danger, and if not, then Jeremy was.

 "Y/N?", you heard from the phone, and recognized the voice as Jeremy's. "I'm sorry, I didn't listen to you, but I'm about to take Kol down. If you don't hear from me soon, I'm probably in some pretty serious trouble. I'm sorry, Y/N, it's been amazing to work with you but I have to do this", Jeremy continued, and you opened your mouth in shock. Before you could say anything, he hung up and you could only drop the phone and jump up from the couch and leave Klaus' embrace.

 "Sorry, Nik, but I gotta run", you said and ran to the front door where you shrugged on your jacket, and grabbed a hidden shotgun from behind the drawer, before running out of the house and towards the Gilbert house where you knew Jeremy was. He had told you his big plan earlier, and you still refused because you couldn't risk things with Klaus, but now Jeremy was about to get himself killed on a suicide mission and there was no way in hell you'd let that happen.

 You rushed to the Gilbert residence, which was exactly where you found Jeremy, with a stake in hand and about to drive it through Kol's heart. Elena was helping Jeremy, and you, just in time managed to scream out to stop them both from slaying the Original vampire. Kol breathed out in relief, happy to see you, the lover of his bastard of a brother. He had hope, hope that you'd save him, protect him from the Gilberts.

 But your scream distracted them all, and when it did, Kol had the time to snap Elena's neck - though she'd wake up since she was a vampire - and the time to take the stake and slam it through Jeremy's palm. Seeing him get hurt caused anger in you, even though you loved Kol, but automatically you sprinted to the kitchen where they all were and after stumbling over Elena's dead body on the floor, you took the stake out of Jeremy's hand and forced by the situation, you ended up shoving it through Kol.

 It was a moment in slow motion, as you watched the stake bring Kol to his death, as you watched Kol burst into flames and as both you and Jeremy moved away in horror. You had done something you weren't supposed to do. You had done a horrible mistake. And as if it wasn't awful enough that you had killed your boyfriend's brother, that very same boyfriend happened to be at the open front door, with tears in his eyes, looking at his dead brother, dead by your hands. The hands of his girlfriend. It was a vicious circle, and you hated it.

 You had never before regretted being a vampire hunter, but at that very second, you hated all of it and wanted to throw all of that life away. You wanted to turn your back on the life of a hunter, and forget you ever killed a single vampire. That was how you felt when you looked into Klaus' eyes, and through them you could see his broken heart. A heart which you broke. 

 "Nik...", you breathed out, and took a step closer to him, but he sprinted away before you could approach him. You turned to Jeremy and wiped your eyes, giving the Gilbert boy a sad look. "Hope you're happy now, you got your vampire. I lost mine", you spoke, and then left the house to go to your boyfriend, that hopefully still wanted to allow you the permission to call him that.

///

 Slowly, quietly, you opened the front door of the house you shared with Klaus. Carefully, sadly, you walked inside and shut the door, then moved towards the bedroom where you knew you'd find your lover. You peeked into the room, and saw the sheets, the lamps, the paintings and the furniture tossed around the room out of pure anger and sadness. He lost his brother, you understood. He lost his brother because you killed him, that you did not understand but so deeply wanted to. You wanted to hug Klaus and be there for support, you wanted to tell him you understood and you wanted to stand by him but how could you, when you were the exact reason his heart was so broken?

 It wasn't like Klaus often showed and declared his love towards his siblings, but you knew he did care about them. He maybe daggered them like a villain, but he never wanted them to die for good. Right now, you were the villain. And you hated it, you knew that you were never meant for the bad, evil way of life. You were good, even if you killed vampires, but so far it had been to protect your friends. And now, you still protected Jeremy, but to do that, you had to kill Kol. And that was something you never thought you'd do. Kill a friend, to protect a friend.

 "Klaus...", you whispered from the entrance of the room, "Nik can I please come in?", begging for him to accept your attempt to fix things. Somewhere in the room, a grunt was let out and you decided to think it was a yes, so you walked in and searched for Klaus. You found him sitting in the corner, with a bottle of alcohol in his hand, and a heartbroken look on his face.

 "Nik please listen to me. I didn't want to kill Kol, but I couldn't let him kill Jeremy. I promise it wasn't my intention, but something I had to do. I know you understand, so please, just... Forgive me, Klaus, I'd never do anything to hurt you, not on purpose", you spoke, hoping that it'd work because it was the truth, after all. If he wouldn't believe it, then you didn't know what you'd do.

 "Is this the real Y/N? Slaughtering vampires? The people you live with and the people you claim to love?", Klaus then answered, his voice hoarse and breaking under the pressure of heartbreak. You took in a slow breath, and shook your head, wanting to disagree but you couldn't. You couldn't say that you didn't kill vampires, because you did. You were a vampire hunter, that was it. 

 "No, that's not--", you began but Klaus interrupted you by throwing the bottle into a wall, and as it crashed, startling you, he flashed to you and smacked you against the wall. His eyes were burning, with something you thought to be fury but you knew that he always hid behind anger and the actions he did under that overwhelming feeling. You couldn't help but feel afraid, maybe he'd smack your head off or tear your heart out - who could ever know?

"I bet you want to drive a stake through my heart too, don't you, love? You want to kill me, you want to kill all of us, with that pathetic Gilbert boy", Klaus spat, which drove you over the edge. You wanted to be sad, but his anger appeared to be contagious and you ended up yelling at him after pushing him away from you and hitting his chest repeatedly.

"No! No, Klaus, I don't, because I'm not supposed to kill people I love! I don't want to do that! I don't want to be known as the girl who killed her friends, okay? I didn't want to kill Kol, but Jeremy is my friend, and I had to protect him. Yes, I am a vampire hunter, but I would never, ever try to kill you, Nik, because I love you more than anyone and I can't handle the thought of living without you", you cried out, desperate for him to accept your apology, but it came out as shouting and crying and you were afraid that it would have no effect on him. But you were wrong to think so, because Klaus did in fact love you too, very dearly and he didn't want to be without you either. And even if you thought that he'd leave you, he wouldn't.

 "I love you too", Klaus responded weakly. "I love you so much, Y/N, and I hate the fact that I shouldn't. But even if you are a hunter, I want you, and I will be with you whatever it takes. I trust you, and believe in you. Kol was one bloody troublemaker anyway... But he'll find a way to come back to life, I know he will", he continued and cupped your cheeks before pulling you into a hot kiss. You breathed out in relief, and felt tears sliding down your cheeks while Klaus held you in his arms. It felt so good to have him.

 "Well, I suppose it is exciting. Living with a vampire hunter, sharing a bed with a vampire hunter... And it'll be worth the slight danger, love. I cannot believe you let me think you were so innocent and weak, though", Klaus grinned, and kissed your cheek.

 You couldn't believe he forgave you, but he did and you weren't complaining. You loved him, and just because he actually loved you back, you were going to spend the rest of your days making up for things you had done so far. You were a lucky girl, and you were going to always remember that, because you had not only Klaus, but Jeremy, and a bunch of other friends surrounding you even if you had to go through a lot protecting them. But you'd never stop doing so.

 Just like you were never going to stop loving Klaus.