If even THIS isn't confirmation romance, then I do not know what more you want. Swen Vincke with a large sign "WE HAVE ROMANCE IN ORIGINAL SIN" on his chest?
Well, that would have saved us 10+ pages of speculation ;P
And of course, romance does not mean sex.... but a well written romance incorporates it anyway (often not as goal, but rather as mid-point) since anyone claiming the 2 things are not somehow related must be another species altogether.
It's just a fact that romance is part of character development for an rpg, while sex scenes and fan-service is part of PLAYER reward. These things serve fundamentally different goals. But a well made game might conjoin them together neatly and create what meme land knows as "waifu" characters. And the goal for a writer in an rpg should at all times be to create characters that people care about (something I think Larian isn't very good at to put it lightly, I literally can't remember anyone from DKS except Belegar!)
Tali and Garret are good examples how to do character writing (even if cliché), which is why I often cringe when I read "we won't make bioware style romances" because bioware is the only AAA dev that actually attempted them to begin with. And not just that, but gay and lesbian romances / alien too.
But in the end, in D:OS native campaign I am not sure I even want romance.. we'll see whether that would work when we play it. (I am not against it though!)