My love for a killer robot (MettatonXReader)

Like it Rough

(Y/n) got on top of the beaten robot, straddling him. Smoke was clouding up the room but with the light (y/n) gives off, there is no need for a switch to see.
"You dumbass! Look at you weak and useless."
She traces her hands against his muscular robotic build. He felt very weak but loves the way she touches him. He wants more of her. She kisses him roughly, forcing his head to hit the wall and moan ,feeling the vibration of his pain got her going. She rest her hands on his metal container which holds his heart and soul. Distracting him, she rubbed her body against his before swiftly opening the container, reaching in to the jelly-like liquid around the heart. Mettaton gasp at the sudden actions.
"What are you doi...",he asks but before finishing (y/n) took his hyper-sensitive heart within the palm of her hands.
She gets up, grabs a thin white blanket off the bed ,and lurches towards the wall, going straight through and running as fast as she can.  She can feel her heart beat going crazy and hyperventilating. She doesn't wish to do much harm to him. For fucks sake, she loves him but can't forgive herself for it. So the only way to deal with it is to hurt him. She runs and runs until she is in the safety of darkness in Waterfall. She goes to a dim lighted pond, to drink and bathe from all the grim on her. She places Mettaton's heart in the center of a echo flower nearby and begins to strip off her shirt. She notices the old wound, when she first met him. It's not red anymore but is iridescent with crystalline sealing it.
"Fuck....what did I get myself into?", she speaks,tearing up," What the...who am I?"
She began crying, taking more clothing off and dips her body into the mild water. She swims and swims forgetting about time and what happened. Hours pass by until her hazel eyes land on the pink sparkly heart. She screams, screams until her lungs burn. She hates herself and is in agony. Taking all the pain and releasing it in a cry. So rough she coughs up blood, dripping into the crystal clear water. Smoke began forming around but she can't see it in the dark.
As time goes on, she grabs the pink heart off the flower and observers each sparkle, each crevice, each time it enlarges and shrinks. She presses it against her chest, residue spilling into the water too. The water began turning to a soft sparkling pink from the goo and blood.
"Oh darling if you missed me that much you should have just stayed."
(Y/n)s eyes widen in fright.how long has he been here? Oh geez...
He grabs her out of the water by her hair and throws her against the floor. She coughs up more blood, running down her wet body as she sits up. Then he kicks her head and steps on it to the dirt.
" What was that again you said? You don't know me? It's nice not isn't it before you see this become reality!" His eyes and build began turning red and black again. He pushes more pressure onto her face. She screams from the intensity a blood curdling scream. She squeezes the heart roughly, Mettaton stumbling back spazzing out from different areas of his damaged and still smoking body. (Y/n) grabs the thin sheet and sticks it on her wet body running again. Holding tightly on to the heart, she heads toward the home it all happened. Where she let him stay and fell in love. Where she wants it to end.
She climbs the steep hill, wind blowing but she can hear the metal feet of Mettaton's behind. She looks down and sees he is climbing the hill too. Her hair and blanket whips in the rough winds in the night air.
"You can't run away forever!"
He is close behind still halfway climbing. She blows the door up with crystal explosion, trying to go through the maze of shards to go in.
"You think I'm stupid, don't you? Look at me. Or I just might destroy this beanie and jacket...remember?"
(Y/n) freezes in her place. She goes climbs down the spikey mess and is face-to-face with Mettaton.
"Don't...." ,she takes a deep breath and sighs," just...follow me."
He furrows his eyebrows and is still angry, red still on the surface of his exterior. She grabs his hand and magically brings them up with crystals pushing the ground to the secret garden of hers. Where they sang and learned of each other.
She softly puts both of her and Mettaton on the floor, erasing the crystal trail. The cave is covered with green mushy moss covering up the crystal instruments and furniture.
"I'm sorry Mettaton....I just need to do this for myself!" She grabs her clothes in her hands still hanging on to the heart, placing it on the floor behind him. She grabs the back of his arms and link them with hers so she can't get out. She kicks him in the leg, blowing him up from standing.
" You need to stop Mettaton!"
"You're being a bad girl! You need to be taught a lesson!"
He flips her down on to the floor, she squeezes his heart once more. Her blanket rips off her nude body.
" ugh you bitch...."
He tries to take his heart back but she tugs on it harder, making him fall to his knees on top of her ensuring she can't escape. She sees the impact of the heart. She begins slowly rubbing it, hearing small whimpers. He isn't fighting it anymore.
She smirks at her power, and softly kisses it. She looks into his eyes and he stares back with intensity, and white hearts In the middle. She begins sucking on it and he falls onto his arms , propping himself up on his elbows. He moans with pleasure erupting from his mouse like crazy. He sucks on her neck kiSsing up the most sensitive spots making her moan onto the heart. She feels goo running onto her stomach, dripping down from the container that holds his heart. They continue feeling one another, forgetting their troubles and pain. Brushing each other's skin, exploring new areas, finding each other in the intense vulnerability to the other.

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