The official Pokémon movie blog has updated. We have added a section collecting every single blog entry for easy browsing. Translations of the new entry follows:

Quote Central: Memorable Lines from Pokémon Movies #26

Thanks to the Time Flower having projected a scene from the past, Satoshi learned that it was true that Aaron had sealed Lucario away.
As he apologized to Lucario for the harsh things he told it, not realizing at the time how Lucario felt, Lucario says these words.

This quote was submitted by "Aaron", who included the following comment:
Even though Lucario's words imply the possibility is there, Satoshi knows he will never walk away from Pikachu no matter what. I think there are similarities to this year's movie here as well.
Thank you for your contribution!

"Aaron" from Yamaguchi will receive a specially made Pokémon movie clear file folder.

If we use your submission, you will receive a specially made Pokémon movie clear file folder!
We want to hear your "Memorable Lines from Pokémon Movies"
We are now taking suggestions for "Memorable Lines" from past Pokémon movies!
We want your favorite "wise words", "inspired sayings"... or even utter nonsense.
To send in a suggestion, choose "Quote Central" from the Apply page and list the following:
"Movie title" - "Name of character or Pokémon that said the line" - "The line itself"
In addition, please also list "Roughly when in the movie the line is spoken" if you know this before submitting.

Submitted content will be chosen for publication by the official Pokémon movie site. Not all submissions will be published.
In addition, please understand we may edit the submitted text to make it easier to read.

Source: http://www.pokemon-movie.jp/pokemovie_ch/?p=2927