Over the course of the game, I repeatedly encouraged both Jeff and EDI to pursue a relationship. However, at many junctures, I had options that seemed to discourage the two of them from getting together. I could either try to make Jeff be more cautious (and avoid injury) or stomp out EDI's blossoming emotions/humanity.
Not to spoil anything major, but judging from late game cutscenes, it seems kind of "hard coded" that they're going to get together. If I'd been overly negative towards the both of them, could I have changed anything between them? Or is this just the way the game plays out, regardless of my input?