Oh, Ladd. Throwing yourself off the train to save Lua was such a mindfuck for the audience. Now we don't know anymore if you're bad for Lua or not (because we don't know if the promise to kill her has just become an empty mantra you can't get out of the habit of saying).
I really loved this. Claire is, in his own way, just as psychotic and detached as Ladd, and it shows so much here, because most people don't think trying to comfort a woman whose boyfriend they tricked into jumping off a train will actually end well. And Lua... for once, I can actually empathize with her, instead of feeling like I'm staring at an alien entity in the shape of a human. It's these lines that make me think that Ladd might be, in his own, disturbing way, good for her:
...it would be easy to just slip back into the dark she lived in before Ladd. Easy to not see, to not try.