A Monster To Love

Chapter 9: Little Hints

It had sort of become a casual thing to see Frisk wearing Sans' clothes.

Toriel has noticed one time before her coma, and was suspicious if they got freaky at Sans' house.

Frisk ended up almost dying of embarrassment and blushing a dark crimson while Sans turned into a sweating mess of denial.

This time, however, when she was wearing his sweatpants, t-shirt, and jacket with a few weird marks on her neck as they walked downstairs together, more than just Toriel got suspicious.

"You guys made up?" Undyne asked with an eyebrow raised.  She noticed the mark on Frisk's neck and squinted her eyes at it.  "What's on your neck, Frisk?"

Frisk blushed, and Sans looked at her neck to see what she meant, then saw about three hickeys around her jaw and collarbone.  He turned blue, a laugh erupting from him to try and cover what it so obviously was.  Frisk looked at him nervously with a look reading "what the hell is on my neck".  Sans whispered under his breath so Frisk was the only one who could hear him say "hickey".  She turned a bright red.

"Well, it's obviously nothing, probably just where I fell off my bed or something..." Frisk trailed off, looking to Sans for help.  He shrugged subtly.  Undyne narrowed her eyes suspiciously.

"What's up with your hair?" She inquired.  Frisk forgot that she had the crazy sex hair look going on from last night.  Frisk winced.

"I..."

"Sans, get outta here.  Frisk, get over here." She ordered.  Frisk felt her heart begin racing, glancing back at Sans one last time as he shot her an apologetic look.

Frisk sat down at the seat in front of Undyne at the table, chewing on her lip nervously.

They heard the door shut as Sans left the house, probably going to Grillby's.

A silence fell on them, Undyne giving Frisk a smirk and a knowing look, and Frisk blushing profusely.  Undyne didn't even have to break the silence.

"Sans and I had sex last night."

~

Undyne threw her fist in the air triumphantly.

"I FUCKIN' KNEW IT!" She yelled victoriously.

Frisk heated up in embarrassment, smiling and looking to the table.

"...Was it that obvious?" She asked self-consciously.  Undyne giggled.

"I could tell the second you walked downstairs." She laughed.  "Anyway, spill!"

Frisk pushed her hair behind her ear.

"So last night, I was upset that he hadn't told me he went to therapy when I was asleep." She explained.  "I just wanted to know if he was doing okay, I guess.  Then, when we were arguing in his room, he—out of nowhere—kisses me."

Undyne put her elbows on the table and held her head in her hands, engrossed in the story.

"I was a bit shocked, but I swear, every time we kiss, I feel the fireworks that just seem to explode around us, like Disney World at night on speed." She joked. "My knees go weak, and my heart seems to burst."

Undyne smiled warmly.

"You two really got it for each other, huh?" She asked with her sly smile stuck on her lips. Frisk nodded.

"Anyway, we end up hooking up, and afterwards, he apologizes for not telling me and I fall asleep in his arms." Frisk sped through the last part with a shy smile. Undyne giggled.