My opinion is that you are overthinking this and only seeing those signs of supposed gaslight while ignoring the rest of the dialogues and narration. Plus, yes I know it's just a few days but I tried to build up a backstory and some of their past a bit so you realize their relationship has been cooking their whole life (but I don't have the time to tell that in a traditional way, obviously).
You'll see Erik is just as much in love with Lyna as she is on him in 1.5. And even if I did go in that direction you say, it's still fiction so whatever. I just want to tell a hot story that is not the usual taboo AVN where the main topic is not approached in the slightest at all and the characters might as well not have any labels.