Zach's groan matched hers when she lowered herself onto him. "Your wish," he managed through gritted teeth, "my command."
His hands settled on her hips to steady her when he arched his hips up to meet her, to bury himself deeper still inside the warmth of her body. Once he'd settled into a rhythm, he leaned forward and captured one swaying nipple in his mouth, teeth tugging then suckling it deep into his mouth.