The Dark Urges have changed. They would always take control of you during the night and have you kill an innocent soul, but now they are always present in your mind. But they do not desire death. No, they desire him. Astarion, the vampire spawn and your companion. It appears that both you and the Dark Urges desire him.

You are cleaning your gear when someone knocks on your tent.

Astarion: Mind if I join you, darling?