Steve/Bucky
Since he'd known Bucky was there before he announced himself in any kind of way, Steve only smiled and tilted his head back a little, eyebrows raised in mock surprise. "Buck! Fancy meeting you here."
He moved to clear off some of the colored pencils to give his -- Bucky a place to sit if he wanted. "The nurse? She seems nice. When you do think she'll be by?" It was a little like playing house, except he had no refreshments to offer beyond water (sometimes with berries in, for flavor).