On some level, Peter understands not wanting to go up to his room; he didn't particularly want to when he first arrived either, because a small part of him felt like the second he turned that key was the second time he was committing to making this his home.

He was right on the verge of empathizing when Bucky asked why he was in Berlin, and suddenly, Peter felt embarrassed.

"He didn't drag me," Peter says. He's clearly on the defensive. "I went to Berlin because I wanted to. Mr. Stark needed my help."