Today I heard the phrase なんてことしてくれた, as in: 君！なんてことしてくれたんだ！ which I learned means "Look what you've done". I thought くれる was only used when someone does something nice for you. Is this just a ...
I have been taught that they are used when receiving something (or a favor) from someone. But how exactly do they differ? I've searched the web for an answer and.. One site suggests that kuremasu is ...