"Fucking you from behind."
From Create Your Own Story
It was a daring statement, but you aren't in the mood to toy around. You aren't interested in her in any way but sexually... getting it out from the beginning is best for both of you!
Fortunately, she doesn't back off, either, although her face flushes again. You can tell this is just what she wanted... for you to be overly confident and make her feel like you don't care at all. Masochists are easy.
When she gets out, "You'll have to make me want it, first," trying to restore a bit of her dignity, you just smirk. She already wants it, but you'll oblige her.