It's a defunct system at this point. It still applies somewhat to Diana.Does affection or corruption do anything? At this point it seems like it has no impact at all and doesn't matter in the slightest.
Used to be you'd have to grind those stats up in order to dose them beyond certain thresholds or participate in certain sex options. Now it's basically flavor text.
This game has changed A LOT over the years. Sex scenes used to be more "interactive" (read: grindy as all hell) and there was even a planned route for if you just outright raped everybody instead of dosing them into consent.