Then don't read it, job done.
Yeah, I get that people might reveal spoilers if it gets released, but frankly, I don't see why people who don't want to be spoiled feel like they should get priority over people who do want to be spoiled. If you don't want to be spoiled, there comes a point when you need to step away from BSN because spoilers will abound. That's just kind of how the internet works.
I don't think they would. I'm sure he's a romance - but it's not official until someone from BioWare says that he is.
I agree with this 100%. I'm sure that he's the gay romance, but technically he's not confirmed. Just like Iron Bull isn't confirmed. However, when the devs highlight a character's sexuality in their pre-release interviews, it does tend to suggest that those characters will be romanceable, especially given that Bioware knows their audience and knows that the BSN will pick apart every word and relate it back to romance in some way..... 
I dunno, I think he is pretty much confirmed if DG felt the need to comment on Dorian's sexuality. It wasn't needed to convince us on him being a rebel to what the Tevinter Imperium currently is for example.
"Pretty much confirmed" =/= confirmed, though. Those are two completely different things......