I'm not the Alma you remember. But I'm not the me that I remember either.
[He isn't sure how to better explain it.] But we can still be friends, can't we? I won't do anything to the Order or even talk to them if you don't want me to. They don't matter to me, but you're my best friend. And I have to make a choice, so I choose you.
[That's what Dean said and it had stuck with him since the day before. He had to decide whether Yu was really his friend. If he cared about Yu more than everything else. And of course he does. Yu is everything. He won't let them take him away from him and if he has to change himself to keep Yu, then that's what he'll do.]