This game can be.....very grindy. No the mats, but more to raise the girls affection. Wish there was a guide or something because even when the girls show you "hearts" and try to go to you, they dont allow sex yet, at least no until you make it official. I guess you need more affection, if you want to have sex with a girl, even if you are a couple with another.
If someone can give some hints, that would be apreciated.