Even if you don't romance the party members they all still act like they are in a romance with the player character forcing themselves on the player character imo.
Also I do not want the romance tuned down at all, the only thing I want is the NPC's acting like they are in a romance with you even after you say no or don't show interest in them like that.
I'm with you here. I think excluding da2 Bioware did a much better job at this aspect of romance both in inquisition and me3. I think it's a matter of cleaver writing more than anything else that Larian lacks here