It seems odd to me that, given it's her first loving long term relationship, that she would want to make it an open relationship so soon (or at all). Like the day after they consumate their relationship, she's like down to have an orgy. That doesn't seem healthy at all lol
Thats again about character's behaviour that seems out of her character. But to me its acceptable, because it is fully on you("If YOU are comfortable with sharing...so am I").
