the issue is that Zoey was celibate on her "find herself" journey and learns that MC is the one for her even though she has literally never been with another guy, Sage has been in a sexless relationship for x amount of time and is comfortable with "fuckbuddies" but only uses MC, Jill is literally a virgin, Maya is essentially a virgin, Bella was married once in the past so she has been celibate since then, Josy's only relationships seems to be with Maya or MC. Its like DPC knew how stupid it would be if all the girls you could chase were literally just single, so he came up with a myriad of reasons that they could be EFFECTIVELY single and ONLY get fucked by MC. it comes off as unrealistic and like the price DPC paid to make this a psuedo-harem game like most of the other games on this site.
Like literally why is Tybalt of all characters the only other person in the game who is trying to actively pursue one of these women? For the narrative its so MC can have the most pitiful competition ever as he white knights for Jill, but in reality most of these girls are promiscuous as hell and they would probably being pursued by guys (or girls) left and right. for all the shit he goes through with Maya's finances and all the little things DPC tries to push so the world seems "real" and like there are in fact "rules" to it, but the illusion to me is easily shattered when the MC is the only person having sex/being intimate/being affectionate even on like the entire campus. and even before his arrival all these characters had "reasons" not to be doing those things too