Childhood Best Friends.Nightmare!Sans X Reader (Under Editing)

Okay, this is my first 'X reader' so please don't be mad it may be bad but yeah

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You have known Dream and Nightmare since you can remember, but you were closest to Nightmare. He was too relatable not to be. But what do you do once you find out Nightmare ate one of the Negativity apples? what will you do once you find out that you still have feelings for Nightmare? And what will you do when you find out that he feels the same?

will you reject him or will you confess and date him?
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Disclaimers:

UNDER HEAVY EDITING!!!!
I DO NOT own Undertale or some Oc's
I DO NOT own you
I DO own most OC's and plot used

This was one of my first books I wrote. I'm gonna make it count.