Oliver nodded at the first question, even if it was just reaffirming what he'd said a few seconds earlier. It was the second question that hit him in ways he couldn't really describe, and the smile faded slightly.
"Marco, none of what I did was so that you'd owe me. You know that." His tone was patient, gentle as always. "If you're worried about it, you can make us even just by makin' good choices where you can, and takin' good care of yourself and the people you like. And keepin' me company still. It's gonna be quiet around here all by myself." He smiled again, but it was no lie that he'd probably be feeling some empty nest syndrome. Weird, considering Marco had only been there a few weeks, and the kid wasn't even his. Well, not in the traditional sense.