You already decided

Since you already decided you would obey him for the week you don't want to back out now, so you silently put your head back down into your pillow.

he starts to grind in between your cheeks, its rough going, you aren't wet there. Dean noticed as well and says

"Looks like I need to get lubed up."

Thinking he is gonna get up and leave for lube, you relax only to feel his whole cock slide into your sopping wet virgin pussy. You turn and glare at him, about to speak but he raises an eyebrow and you stop.

"Just lubing up my cock, no biggie, right?"

Not falling for his trap, you remain silent, he glides back and forth a couple times before pulling out. He goes back to fucking your ass cheeks.

After a minute or two he says "I'm about to cum, bring your face over here."

You turn around and slide your body down so your face is right up to his hard cock that he is stroking furiously.

"You are gonna wear this... unggh."

He cums, all over your face and hair, dripping down your cheeks. Your face completely covered before he finishes.

"whoo boy am I parched, go downstairs and get me a glass of water... as is."