i mean i think its a given for any form of media, not just porn games. If its porn games specifically then there might be an underlying issue though. It also depends on the story and if characters are worth getting attached to, i still remember when i first played BADIK and there was the 2 girls that were close to the MC and they were secretly together or something? i dont remember but it was a massive revelation at the end of season 1 and i remember being gobsmacked about it