You were a sadist

You had to confess you weren't the most sane sadists but a least you didn't put people in your basement and make a red room

Now you have a girlfriend that doesn't know your a sadist, you just acted nice and innocent instead

Like a dorodere

(A dorodere is someone that acts sweet and innocent but on the inside they a creepy and insane. Like Nagito for example)

Celestia had moments where her anger would get the better of her

These were one of those moments.

She was yelling at you and with your innocent act you had your hands into a ball cover your mouth and with (fake) tears

"Can you please calm down" but she just kept yelling at you.

She scoffed, getting sick of your silent behavior and started to walk away.

You decided you got sick of your innocent act, you smiled sadistically.

You grabbed her hand and pulled her close to you, your chest against her back

"What do you think your doing?!?" she screeched with surpise, you've never acted like this so she was shocked

You grinned a her sadistically and bit onto her neck making her moan and scream

You pulled her closer to you with your nails digging into her and making her whine in pain.

You spun her around to face you and pinned her to the wall

"(Y-Y/n)" she stuttered in shock

"Hm"

"What happened to you?"

Two minutes ago you were acting all innocent, what's with the sudden change?

You grabbed her hands and gripped onto them, they were on the side of her head and you made your body press against hers

"You could say, I faked my innocent nature"

By now you and her were on the bed after doing 'it'

You grinned at the masterpiece you created.

You got off of her and helped her up

"Was that too much for you?" you asked

She had scratch marks and bit marks all over her and she was panting

You giggled "sorry"

"It.... It's fine"

She passed out from exhaustion making her body lean to you and you both fell asleep on the bed