Undertale- Mysteries- (Sans x Reader)

Part 9

                                              After Sans got the key from your bag, it made you more curious than before. You and Sans were lying on the couch watching Mettaton. Like always.

"I have a question" Sans said

"Hm? What is it?" You asked

"Why did you steal that key of mine?"

"I-I...." You stuttered. "I was just curious of what it was..."

"Well you should've asked what it was, I trusted you Y/N. I would've told you"

"I-....I'm so sorry."

"You should be, that wasn't nice."

You couldn't think of anything else to say so you just covered your face. You felt like crying, really bad, but you didn't let yourself. Thoughts, thoughts, yet more thoughts. Ugh, you couldn't get it out of your mind. 

The key thing wasn't a problem in your world of thoughts. It was... Sans. He crawled on top of you the day before! And it was starting to make you like him back. But, what if he didn't like you in that way anymore? I mean, he seemed so... Distant from you when he was speaking. 

It was late and your hand still hurt. You think you know what happened. When you were daydreaming, Flowey flew those white pellets at you. And you tapped one, passed out, and woke up with a huge scar on your hand!

Flowey.

Flowey did this.