The romances could do with a bit of an overhaul, in my opinion. Feels like several of them have weird pacing, and so many characters go from 0-100 in the blink of an eye. You say a single affirmation to Halsin and he acts like he’s been in love with you his whole life and you’re soulmates. Dude, I just offered you a drink at a celebration out of common courtesy.
With every other NPC being so horny it’s actually been refreshing to have Karlach just behave like a buddy in my playthrough, but in general for the Karlach romance to be so fiddly you need to follow a guide to not lock yourself out of it just sounds… poorly implemented.