What is your opinion on Nojima calling Cloud and Aerith koibito and on the way to a smile novel stating that Cloud is the most important person in Aerith's life. Zack doesn't even get mentioned.
I have a feeling that the ending will be ambiguous, open ended and left for players to interpret. Otherwise it would retcon the novel.
For the koibito note, I had a theory that I mentioned previously so I'll copy and paste it here:
Regarding the koibito note, that Aerith died before she could meet or talk to Cloud. Perhaps she developed "love" for Cloud but was unable to figure out what kind of "love" it was because she died. If this Aerith is the same one from COLW, I can see why her feelings are conflicted because this is her first time meeting Cloud after death. However, after going on the "date" with Cloud, perhaps its through having that experience with Cloud, where she comes to the realization that the "like" she initially thought she had for him is not necessarily that. Meaning, its perhaps leaning into an emotional love, not a romantic love.
For the Aerith and Zack scenes, its important to observe that Zack has not met an 'awaken' Aerith yet, so his interactions with her are limited. We also do not know the nature of Zack's existence and if it was possible for Aerith and Zack to meet in any of the universes from Rebirth. I think there were a lot of Zack and Aerith moments, but it was told through showing rather than telling. Essentially visual storytelling using symbolism. I think the angst is part of the drama for a setup to be resolved in part 3. The greater the angst, the bigger the payoff.
For instance:
-There's a scene where Zack looks at the broken sky in his world, and a shot cuts to Aerith looking at the blue sky (usually associated with Zack) as she wonders where Midgar is and how her mother is doing.
-Aerith seems to feel Zack's hand when he touches her hand in his world
-When Cloud "remembers" Zack, he remembers that Zack was in love with her
-In the dream date world, there are a lot of references that seem to imply Zack (the stamp dog design, his scenes cutting throughout, the feeling of the date giving CC vibes)
-In the end, Zack is at the church (where he and Aerith first met) and is surrounded by the yellow flowers (Aerith's favourite flowers and they
symbolize reunion)
-Also, Aerith still wears her bow and pink (in CC, Zack bought her the bow and suggested she wear pink when they next meet)
There may be more examples, but these are what I thought at the top of my head.