Don't get me wrong, I think the actress who plays the GF is amazing - it's her character I don't like. She reminds me of every wannabe actress in LA I dated. They "act" kind and concerned, but everything - absolutely everything - is always about them.
I think that's exactly what the writers are going for. She's supposed to be an anxious petty narcissist, in the most normal unremarkable way.
I totally thought Fuchs was planning to tell/show Cousineau that Barry killed his woman to get back at Barry for all the **** talking. Then I was like "oh he's gonna kill him? Why? He's just jelly that Barry wants to go to acting classes instead of be a hitman?"
Rewatching while not drunk and the gf is a pretty spot on representation of how playing that hollywood acting game will make you an insane narcissist. I know nothing about that world but from the podcasts I listen to with people living in and around that world it seems like a perfect fit and is hilarious when Barry and gf are rehearsing. I've hated that character for a while now but you can see that her mind has gone thru the meatgrinder in that scene.