So if they're able to communicate, see one another, and touch one another, why wouldn't a continuing romance be possible?
Because any information regarding that Cloud/Aerith interaction is sustained after the life threatening event is slim to none. Cloud and Aerith maybe talked a total of five minutes before he was caught off. And each time she was presented as a spiritual guide rather than someone he has consistent contact with. And at the end of the series, Aerith is seen leaving the church, regardless of the logistics of it, to me it's clear symbolism, you are okay now and I'm returning the place I have to be.
Personally, I'm a fan of player interpenetration and vague canon in the OG especially, but I find the idea that he can continue a romance with her post death just silly. Love her even after she's gone, yeah, that's fine within the context of the series. But
actual relationships, ehhh no.
Then what's the deal with his grief that she died? If she can talk to anyone whenever she wants, make contact whenever she wants, interact whenever she wants to, then she isn't dead. She got an upgrade. And it doesn't fit with the story at all.
interview with Yoshinori Kitase said:
In the real world things are very different. You just need to look around you. Nobody wants to die that way. People die of disease and accident. Death comes suddenly and there is no notion of good or bad. It leaves, not a dramatic feeling but great emptiness. When you lose someone you loved very much you feel this big empty space and think, 'If I had known this was coming I would have done things differently.' These are the feelings I wanted to arouse in the players with Aerith's death relatively early in the game. Feelings of reality and not Hollywood.
So doesn't Aerith being able to do all these things post death take away from the essence of what they were trying to bring according to the interview, a sad, tragic, less than hollywood death. What you seem to be proposing is just as good as a resurrection, something the creators always denounced.
That's just my feel of it anyway. Aerith is there, but she's not going to be just another person who also happens to be dead. It cheapens her entire sacrifice, and cheapens the mythology of FVII.
I mean, if Aerith can do these things, can't Zack? Cloud can see Zack, he has a conversation with him. So now he's still bff's and has convos with him on a regular basis?
What about Aerith and Zack? They were pretty much in love during Crisis Core. Does this mean they can start dating again, take that date somewhere again? Then what's the point of having them die on each other in the first place?
Dead is dead. Once you're gone, there are things you can't do. People can still love you, and vice versa, but you can't go on pretending that you're living. Aerith and Zack did come to Cloud when he needed them most, but that's it. When he no longer needed them, they vanished into white light. They're with him in his heart, but not his present. That's the tragedy of it all.