I'm fed up with all the "Halsin traumatized by his three years life being drow mistresses plaything so seriously that he couldn't blablablabla" thing. If we talk about trauma, mind that he had spent a hundred years desperately trying to find and free Thaniel and lift the shadow curse and failed and feel powerless and guilty for it, I'll say it's tramanize him more than anything. Just accept that he's not that into Tav and not interesting in any commitment (he is not that into any individual damn it his heart lay with nature and I am fucking loving it). Focusing on his "trauma" and complaining Larian didn't dig into his "trauma" deep enough seems like a kink talking to me. If anyone really into sexual trauma kink that much, just turn left to Astarion, he has tons of traumas to appease ppl's fetish.