(Human) underfell sans x Reader lemon

Where am I?

You just fell, you had no idea where you where you try to stay calm as you get up and rub your head. "Where the Hell am I?" You say quietly you hear someone mutter "The underground my, Dear" You jump in surprise and grab your chest "Don't be alarmed its just me, Flowey" You were scared and began to think you were insane as you pinch yourself as hard as possible "Ow. . . I'm not dreaming. .  ." you hear the small flower laugh "Shut up! Its not funny you dumbass!" The flower smirked "What did you say?" He says in a demonic voice "shit. . . " You knew you fucked up as you quickly run out of the nearest door. Only to your surprise it was a small village. "What the- " you were cut off by a tall male with red clothing and a collar standing in front of you smirking "Hello, Dollface" you heard him say chuckling "Don't call me that. . . ." he smirks at your comment "Or what, Dollface?"
You lost train of though ". . . . " you stay silent as you hear him chuckle "Who are you?" He looked at you with a smirk "I'm Sans, Fell Sans, or Red, whatever ya wanna call me, Doll" You hated being called "Doll" or anything close to it. You tried just to smile even though you want to kick his face in. "I'm y

" You could see him grow a small red blush as you grow confused "N-Nice to meet y-ya, Doll. Well c'mon you can stay with m-me and my brotha'" You were even more confused as you wanted to say no but he grabbed your wrist and took you to a small two story home. It was quite messy as you try not to trip letting him lead you to the couch "You can stay here 'till Paps comes back" without letting you speak he leaves. You decide to look around as you hear the door open "?" It was another tall male but he was taller than the other he walked up to you and smiled. "Welcome to Helldin, Y

" he said somewhat sarcastic. "Thanks. . . " He smirked before pointing to a room at the end of the hall "That's where you'll be staying." You walk to the room and sit on the bed bored as hell
(Sorry to end so soon but I'll make sure to finish it later!)