This sick idea of "purity" is just one of these things that needs to die and needlessly hurts women all over the world. We are 3D objects that don't go away when you don't look at us, and actually act idendently from you.
But fine, it's just video games, and your fantasies are none of my business, but still, if you think like this, dear OP, you should probably find another game to play alltogether. This one, unfortunately to you, kinda aims for realistic writing, which strongly opposes the idea of a girlfriend of something passive you act at when you feel like it.
It's quite possible that you will be a bit dissapointed.
There are things like girls *gasp* initiating sex on their own, or *schock* dumping you.
Well, at least poor Kenji will have a fellow conspiracy fighter in you...
If it really interests you, Emi acts very confident about it and had at least one previous boyfriend, so no hymen (and better sex scenes, perhaps the only ones with something of a "pr0n-like" feeling, except for the last one, which happens to celebrate a new level of emotional intimacy having been reached)
Misha's ambigous. No dudes, but possibly girls; Then again, she's an adolescent, so maybe there was no such serious crush before Shizune.
Shizune is probably just tsundere/trying to impress, but it could go either way, no efvidence for, no real evidence against.
As for virgins, Rin jokes about having lost her "marital purity" (and doesn't seem like a traditional dude-magnet), Lilly is explicitly noted to be one, and the H-scene with Hanako is obviously a very realistically rendered first time, including pain because fucking hymen and the girl having a hard time relaxing properly, awkward condom break, HTF do we pose/move, and the obligatory did-we-go-too-fast jitters afterwards, which is what sex with a virgin, esp an insecure one, would realistically be like.
Mine wasn't much better - at least they got it sticked in at all, and hey, she climaxed.
If you got with a girl who'd never done it before, chances are you'd have to teach her the most basic things.
Sex is like one of these things you learn through practice - wich you can, of course, also get with a single monogamous partner, if you give yourself some time to get attuned to each other, but lemme tell you, first times are overrated. Trust me, you want a partner who knows WTF they are doing, and if your partner doesn't, you'll be happy once they learn.
How is "virginity as fetish" even supposed to work? Do you like, immediately dump the girl after you're done with them?