"When you've tired of me," she said softly, precisely, "Apollo will still be my brother. Will still be there for me." "I'll never tire of you," he said, knowing with every thread of his soul that he spoke the absolute truth. "Then prove it." He knew what she asked with such an open and vulnerable face. Something within him shriveled and died... he'd been on the rack too long for a penance he wasn't sure he could ever entirely pay. "You know..." His voice was hoarse, the croaking of a dying man. He licked his lips. "You know why I cannot."