「敬語じゃなくていいですよ」 What does this sentence mean exactly? I just started writing with a Japanese girl over e-mail, and she wants to know about my nation's culture. Before responding, I want to make sure whether it's ok to use informal language with her or not. My guess as to what this means is that I do not have to use honorific language. Is this the case? The girl is 18, and I am 19. Thank you!