“There you are, sweetheart, sorry I’m late. I was looking everywhere for you.” (Howl’s Moving Castle)
It’s the very first thing Howl says to Sophie when they meet for the first time. The quote itself, without context, isn’t exactly meaningful and rather sounds like some bullsh*t smalltalk to distract the guards … but there is this scene very late in the story where Sophie goes back in time and witnesses a young Howl catching and swallowing Calcifer. Remember what she did?
She called out to them. “Howl! Calcifer! I’ts me, Sophie! I know how to help you now - find me in the future!”
Howl literally has been looking for her ever since that day.
It’s one of these small but really cool details that you only retroactively realize after watching the movie several times.
