From Inside the Grey House:
“You owe me blood, Natalia.” His voice whispered into her neck, traveling up her jaw line. He watched her reaction as he exposed his fangs to her.
“I do.” A low whisper. “When will you collect your payment?”
He turned her around, so her back was to his chest. Vincent lowered his head to her neck, letting her feel his fangs on her flesh. Each time he pressed the tips into her skin, her breath caught in anticipation and a touch of fear. “Tonight wouldn’t be wise, as you fainted on my steps not more than six hours ago.”