So Max disapproved of the sisters lifetyle?
Putting aside the open Lesbian kissing moment in the pub - I can accept the one in the drunken party to a lesser extent... 1940 and all...
But 2-3 times it seemed clear that Brad's character had issues with it... and the looks from the GF and him walking out of their flat to me confirms it.
Wonder if there was a cut scene/confrontation....??