There's a "script" of the full demo posted earlier. Things were said and shown that implied it.
For all we know we could be wrong, but its not completely unfounded as you suggest.
Do you mean the one that EP and I were discussing earlier, or an actual "script" script of the demo I haven't seen yet? Because if you mean the same one I've been using as a basis, it was incredibly vague to the point that I don't think it implies anything, especially regarding a romantic relationship, and not one between Dorian and Felix specifically.
I've looked over it a couple of times, and to me it still reads as if it's about Alexius, as the writer mentions fighting and killing Alexius, after which the Inquisitor expresses condolences to Dorian having been close to him (could be either, and Alexius was the last person referenced). And also that it was just a feeling he got, and not anything outright shown or mentioned.
But anyway, it doesn't matter. Like I said, the conviction just seemed a little out of place.
Edit: Accent clarification. Interesting. Can't wait to properly hear it in-game!