Her confession?

When Allen saw how she wasn't budging, he chuckled. Stubborn woman, he walked over to the couch and took out a map. The sea, huh? There are many beautiful places like that in the Empire, but Allen has never seen them before. Up till now, he has did not need to see the sea after all.

Still, 'The ocean blue color reminds me of the sky! I've always wanted to see it.'

'Why?'

Allen remembers acting indifferent to the girls' words. Back then, he was only indifferent because he was unsure of what she was getting at.