Lost in memories,
This is the line that reminds me most of the Lifestream event but we already know it isn't that. Cloud is pretty much lost in memories the whole game.
but still so close... close to what? Close to Tifa? Close to the truth? Close to finding himself? There doesn't seem to be any concrete clues that allude to anything in particular. It's probably just something obvious that I'm missing though which is annoying!