Darkness' Eternal Bride (Gaster x Reader)

Chapter 18

(SLIGHT NSFW AT THE END!!!)

I .... you

Gaster still hid behind the pillar as he observed you in the middle of the ballroom, occasionally glancing around for Jayden.

His soul kept fuzzing on the inside, as it beated faster and faster, even having to clench on his chest to calm himself, as a grin shaped on his lips.

Oh, how you look beautiful...black truly honors you.

He watched you as you waved your hand shyly at Toriel and Asgore, who were dancing on the dance floor like the couple they were.

The couple they were? These four words resonated in Gaster's soul, making thoughts run wild in his mind, thoughts about you two together, dancing there, cuddling, watching movies together...

It was truly a joyous thought.

He kept observing you as you then directed towards the drinks table, a dangerous action for Gaster since the table was just at a few meters away from the pillar. Alarmed, he looked at what you were picking, and sighed in relief as he noticed that you were grabbing yourself a lemonade and not anything alcoholic.

He occasionally glanced at Asgore and Toriel, who were inviting him with their gaze to make his move and act for once: saying sorry and asking you for a dance.

He sighed with a smile.

I can't do anything. I probably made her hate me in this last month. I'll just watch her from afar-

He then saw a particular guy entering the room: tall, skinny, elegant, like him, with just one expection: being human. Why was he particular? He was intensely looking at your direction.

...I hope he doesn't do anything risky, otherwise they'll have to clean some blood on this ballroom, he thought.

The man started walking towards you with a big cheerful smile plastered on his face, waving his hand as you then noticed him.

"Hi Y/N!" he said as he proceeded to hug you.

He indeed knows her? Does this mean that...he's Jayden? The motherfucker that made her drunk and got her a panic attack in the end?

A weird chill ran down his back, as he started feeling angry when he saw Jayden's arms get around your back.

Jealousy.

Lots of thoughts were running in Gaster's mind, prevalently negative thoughts, about how he wanted to be in Jayden's place, and no matter how many times he had to calm himself, one of these thoughts always managed to exist:

She's mine.

In the meantime.

"Hi Y/N!" Jayden said as he approached you with open arms, leading you to involuntarily smile. Jayden was a lot caring (well, he may have been TOO much caring), which made you sometimes awe.

"Hi Jayden" you said as you answered to the hug.

But then, a weird sensation ran up your spine: almost as if...someone was watching you. Almost as if someone was cursing in that moment.

You felt dangerously observed.

"Y/N? What's the problem? Have you seen something around?" Jayden asked, cupping your cheeks in his hands.