At the loft
Justin is there to pick up his stuff, and Brian is notably absent. Do you think Justin knew Brian wouldn't be there? Or do you think Brian knew that Justin would come and was gone on purpose? Or is it just a coincidence that they missed each other?
Just because Brian isn't there, though, doesn't mean that Justin's memories of him are gone. Everyone he looks, he remembers the two of them having sex during happier times. The chair. The shower. The bed. Justin quickly gathers his things and hurries out of the loft.
You know what? It's not just Brian who's trying to pretend the breakup isn't bothering him in this episode. Justin is doing his fair share of that, too.