There won't be an answer here because it's functionally a false problem. The romance is opt-in, and you have to actively pursue it for it to go anywhere.
That said, there are a couple of places where they'll throw the hook conversation at you regardless of previous player input ,and that's at least a minor issue.
I highly doubt they'll create something specifically to remove the ability to pursue that optional content from the game... but they could do more to make it more obviously player opt-in than it currently is, at certain points.
