There appears to be a lot of analysis of the GF's motives but should that really matter in what the best decision for Wolfman is?
In my opinion, there are two things that matter. The first is what does Wolfman want? Does he want to live together with his GF or not? I feel that is a personal decision to be made by him alone based on his preferences and his moral convictions. . The second is are there legal consequences to his decision especially long term ones?