Eerie
Fire and Blood
Given the number of references ToTP has in this game, I'm not sure about that lol. It's totally SE-style, just like they reference the rest of the Compilation: either you get it, either you don't and they don't really care lol.Which, IMO, means it's Gongaga. I don't think the writers would lean on any player having read ToTP to make that connection. That would just be shoddy writing. TOTP is bonus material; they want to make things clear in the game, given the majority of the players haven't consumed all the extra media (which happily reinforces things for us who have).
The only scene that's even remotely romantic prior to the GS date would be that one. If you revisit the almost kiss, it's pretty clearer that she's making the gesture and leaning in more than he is. Which is why it's beautiful and fitting that he takes the initiative on the date; they're meeting each other in the middle, in a way.
@Rin in French I think she only says envious, I know in Kalm she uses envious. I am, however, not sure if Aerith completely understood what is their relationship, since she got "precious memories" taken from her. In Remake, she definitely knew, but in Rebirth, mmh. Sometimes I do wonder if she realises (or maybe refuses to realise).