Eerie
Fire and Blood
It's the complete guide so it's not an Ultimania. Still, it's there!Wait a minute… “through these the distance between them shortens”. When would this Ultimania have been published, Eerie? 2007/2008?
I will also add that "shortening the distance" was a metaphor used in the Japanese lyrics of Midgar's Blues in Remake - the song that basically storytells Cloud's life (or rather, Akira's life that mirrors Cloud's). It's a Japanese trope well used in shoujos too; personally I always thought it was extremely romantic, considering the Japanese culture which has a lot of social barriers between people.
It really makes sense with CT in the sense that their love is not only a pure love (since it grew from when they were very young) but also one with desire, since they do have sex under the Highwind. So we are seeing throughout the game how they shortened that distance, both as adults in game, but also in their major arc since they were young until they finally get together. Although I could argue for eons that the LS scene is the love confession, so most probably, since fans missed it, it's going to be the big moment where the finally close that gap in p3.