From Inside the Grey House:
Sometime before sunrise she fell asleep in his arms. Her back was to his chest, a satisfied smile on her face. He lay awake, his arms wrapped around her, feeling her breath pushing her chest in and out. He had learned something tonight: his life, and the lives of his people were at stake. It was time to take over, and he wanted Natalia to help him. The look in her eye when she rushed into his arms had shown him all he needed to know. She was upset at being left behind, at not being able to help, at not being there to know what had happened to him. She loved him. Or so he surmised. If it were love, it would bind her to him even more than before. If it were love, he could control her for an eternity. Love was the most powerful tool for control.