His body hardly moved, and his eyes did not appear to even really observe Ernie. At least, they were not directly looking at him. But oh Zach was paying the utmost attention to him - to his face, to see how those gorgeous features would react. And well, it honestly wasn't that much. He saw the changes around Ernie's mouth before the young man's body was facing away from him.
But that gave Zacarias some freedom. He watch Ernie, eyes on him. It was not an intense stare because well, after what he had just said, that just wasn't the thing to do. But he still appreciated the bits and pieces of Ernie's form he could see.
"Something with lots of emotion," Zach replied, voice holding onto even just barely. He had some favorites, sure, but he didn't know what Ernie knew, and he also wanted to know what Ernie was thinking - feeling. And open-ended was better for that.