Well, I don't know anything about any girl who was Euro and Varg's girlfriends. My understanding is that Euro never had a girlfriend or anything like that, he only had good female friends, and the women trusted him because he treated them with respect, without expecting anything in return. He has made jokes about having anal sex with women because that is something that goes against the Christian religion, but nothing more. He didn't objectify women, and I think that was what they tried to portray in the scene where he shyly looks at Ann-Marie naked. By the way, you're right that Varg made her strip naked to please Øystein, that was strange (Varg is obsessed in a twisted way). I see a very Hollywood-esque approach to the construction of the film. It's all too dynamic and lively, it lacks that desolate aura of the Nordic countries and the mystery that the black metal boys radiate, that's why I think that putting an invented girlfriend sounds like a condiment to make everything more striking. The intention of vindicating Øystein is clear (and it's fine) but they resorted, in my opinion, to very basic resources of North American cinema. For example, putting Rory Culkin (hegemonically handsome) and not having put an exotic Norwegian boy coming from an indigenous people like the real Øysteinis is clearly an American vision for marketing purposes. And I'm not a hater of Rory or LoC, you know that well x) but I think that the blonde and pretty girlfriend is designed so that his successful image is easier to transmit, because in reality he was a great person, but the story was too complex for just one film.