Well i am not sure if the player plays as a male or female then they should have sex with the male and female NPCS from theirs perspective
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No, that's not how porn games work. If a dev is making a porn game and they decide to make it only have male romance partners. Then it's gonna be for people interested in men. Which includes female and men. And they obviously knew female players were gonna play considering it's an option so there's no need for you to know, only the dev.