Eva has a weird idea that being Bi and sleeping with the same sex (for women) does not equal cheating.This game is so unfair from a male perspective... Lena can have sex with her roommate Luisa and break up with Ian because he had sex with Holly... Then she can have sex & relations with both Luisa and Holly...
She can buy so much stuff in a sex shop while Ian can't buy any exclusive or even the same stuff...
Any progress in Lena and Indian relations can be made only while you playing as Lena (if you don't use cheats on stats...)
That said Lena does mentally comment about it saying it isn’t really fair she is breaking up with him over it. I think the game tries to frame it that she is doing it more for Holly’s sake than against Ian if she was sleeping with Louise.
I think Eva really pushes the money issue way harder with Lena. It is Lena’s main driving point in the game. She really needs money to help support her terrible mother/ live in the city, and then you as the player have to decide if she would still be able to buy stuff for herself (like toys or tattoos).
Ian has money issues but he is not given nearly enough opportunity to actually spend his money besides a few outfits and a gift for his LI. He also does not have the same opportunities to make money that Lena does.