She's not ready for that

"Kyle, no." Monica breaks from her 'slutty schoolgirl' role "I'm not ready for that. Not yet." You are OK with her setting boundaries. In fact, it is a relief to know that this stunning young teacher is not so obsessed with her fantasy that she can still give you some direction about how she wants it to proceed. You are further mollified by the two words Monica tacks onto her response.

"We'll save your tight ass for later." You promise her as you push her knees further apart on the bed.

"Yes, Sir." Monica falls back into character without missing a beat. "I'm sorry I disappointed you, Sir."

"I've waited long enough for this, Miss Fulton." You smack her once again, before lining up your cock with her pussy from behind. "Did those boys you fucked know enough to take from behind like this?"

"No, not like you do." Monica purrs, "They were just boys, you are a man." Pushing into Monica from behind is even sexier than fucking her with her legs on your shoulders. You reach forward and grab a handful of her blonde hair and pull her roughly back as you drive your cock as hard as you can into her wagging butt.

"That's right, Girl." You slam into her again making her squeal in excitement. "This is how a man fucks his favorite piece of ass. Now, beg me to cum in your tight pussy. I want to hear you ask for my seed."