This game really needs to come with a tutorial, or hints, or something, even just in the game description. I don't really know what I'm even supposed to be doing.
you need to get a girls stats up to get to bang them at the end of the night. that and also get them to strip nude during cards, you can only get a girl to play cards if you've gotten their affection up a bit first. every girl has different requirements so you do need to play around a bit and use ToD to get a read on their personality