Plenty of adults eat pizza. He and Steve went out for pizzas before and they're over 200 years old between them. Just because he still feels a little weird about mooching off the baron doesn't mean he's acting like a kid. What the hell?

"There's been a few nice things." Although he's not thinking about their marriage and now having a wife instead of a husband right now. He does notice the way Zemo's looking at himself though.

"This doesn't have to be a bad thing either. Even if it's not-- a good thing, objectively. How are you feeling right now?"