I actually thought that this was the weakest episode by far. Some of the scenes got draggy, e.g. the theatre scene with Caliban running around. I wanted to fast forward so badly. Plus the "like a son" comment from Malcolm to Victor was completely random.
I thought the Ethan/Dorian thing was good on paper, but I don't think they executed it well. In episode 2, Dorian's pull was showcased much better with the music and pacing. Here it just felt off and a bit random. I get that Ethan was upset over Brona, very drunk from the absinthe (which I bet Dorian barely drank), and overwhelmed by all the developments in his life, and on top of that Dorian is basically turning up "Dorian pull" - but while I appreciated what they were trying to do, the whole thing fell a bit flat for me.
Dorian is definitely getting bored with his life. He was basically throwing around the fact that he wasn't human with Ethan, too bad Ethan was too distracted to figure it out.
I like Dorian and Vanessa together, but I hope there is a point to her infatuation with him. Vanessa is extremely acute when it comes to sensing the supernatural, so it is completely unnatural that she has not yet noticed that Dorian isn't normal or even a human. I hope the show has a good explanation for this. Or is it just that she's drawn to him like everyone else?