Derek laughed, loose-limbed and happy, wrapping the boy in his arms and butting his head against his shoulder, teeth nipping at flushed, damp skin. "So good," he whispered, his words praise as much as observation. Isaac was so good to him, and so good for him, and Derek wanted him to know it. Soon, he would have to move, to reach for the glass plug and make good on his promise, but for now, for this moment, he indulged in the boy's warmth and care.