My reasoning mind completely fades away, and the only things that are left in control of the situation are my base and animalistic impulses.

I returned Paul's thrust and imitated the movement of his hips as I did so. My cheeks are slapping his thighs, and the sound of skin rubbing against flesh is driving me completely insane. I'm breaking out in another round of perspiration as I continue to push my body beyond any and all limitations, oblivious to the tiredness that is working its way from my muscles down to my bones.

I clench my teeth and let out a loud breath as he spreads my cheeks apart...