I'm also in the same boat. 27 hrs in and was wondering why I could progress romantically with other characters but not Lucanis. I found this thread, checked it, and bidding farewell is missing from my completed quests list. It doesn't even show up as failed.
I also saved Treviso knowing that lock-out was possible so I'm disappointed that this bug happened anyway, but I will try repairing the game, maybe going back, and see what happens...
Yeah I’m starting to think it’s not the choice that’s locking people out. Cause honestly that would be screwed up to let people still Romance Neve but not Lucanis depending on the choice.
I think this bug is what’s causing it to happen, and it’s so easy to miss. I flirted with him everytime in my first playthrough but after I got past the Grey Warden quest, nothing else happened.
