your girlfriend name is Miko, you so happy be a couple with her, but one day, when you want to go out to buy food, you see your girlfriend who is with another guy, they are in a cafe, and they are kissing

you realize that your girlfriend is cheating on you and you take your cell phone to take pictures of them, for proof and to ask who it is

and the next day, while at school you approached her

"Hm? What, darling?" she said in a very innocent voice and expression, like nothing happened