What Does He Mean To Me?

You remember a small conversation between you and a boy but for some reason you forgot everything about him other that his name and voice. You journey alongside Sora, Donald and Goofy to restore peace to the worlds, you encounter a cloaked stranger who claims to know you, you feel it in your heart that he knows you but could it be? Is it the person you've been hoping to see? Or was he never real to begin with?