As his cock pushed inside her, her teeth bit into her lip, and her head fell back against the wall, trying to hold on, trusting him not to let her fall.
He was fucking her, there was no other way of saying it. Not making love, or mere sex, pure animal fucking, and the controlled part of her was always amazed and how easy it was to let go with him.
Each thrust from him made her cry out, low and harsh.
"Harder, Bill." Her hips pushed into him, her legs tightening around his waist.