She fucked one dude ONCE and then was blackmailed for it. The opinion about Erynn has run the gamut since the beginning of this game, people have said she was horrible for laughing at the MC (she didn't), that she was creepy for alluding to the two of them eventually marrying (it was a joke), that she is a slut/whore/whatever (she is not). If you don't like that the MC can have a relationship with someone who had sex with someone else then you might want to look somewhere else for fap material.I really don't understand your logic .. I know you like games to be realistic and stuff but that 15 years old said she loved the MC and give Lexi crap for getting with him while she fucked other dudes and Competition is everywhere everyday in life do we really need it in games too where we are trying to escape that reality
Fucking a virgin might be annoying and suck but you would feel special that that was the first and you took it
Erynn, Alexis, Lakeyn, Nikki, and Gabi have all had sexual partners before the MC. Does Nyx explicitly say that? No, but you can tell by the way the sex scenes are written that it isn't their first time. Cara was a virgin (or still is if you didn't pursue her), Layla, and probably Elena are virgins if that is your kink.
I am not the only one who likes "realism" in games, Nyx is trying to write something that isn't just a fuck fantasy. If that isn't what you want in a game I am sure you can find something that better fits your interests.