Jack could feel the tension as if it was his own. He scooted up closer to Andrew, as close as he could get to him without crawling inside of his clothes with him, and the arm became more snug around his waist.
"That's good," he said, his voice a soft murmur against his ear. "Very good," he prased as Andrew picked his feet up off the ground. It was a small thing, and yet such a huge thing for Andrew.
"That's good," he said, and he curled his other arm around him as well. "Now I'm going to walk, just a little - but my feet won't ever leave the ground, okay?" With Andrew's feet off the ground it would feel like flying to him, a little bit, but Jack was going to keep them anchored.