As Scott returned to thrusting into her, Ruby threw her head back, smirking. Most people would probably say he was hurting them, but Ruby had had worse happen in hell - this was a walk in the park compared to some of the things done to her.
"Oh fuck yeah. I want you to tie me to the bed and leave me there just for when you want to use my body... I can take you, I can take you all. Are you gonna be a hot, nasty Master, hmm? Gonna keep me on my best behaviour?" She pinched her nipple, hard, and she thrust up into him. "Oh shit... I'm gonna come soon... Please Master, when can I come?" She whined a little, grabbing onto him tighter.