/lit/ - Literature

Hi /lit/. I would like to ask for your advice. I've been speaking to my friend after having him read my WIP story. He's volunteered to help me edit the story, and I've reached a point of contention. I'm trying to explain that one line doesn't need perfect grammar, as it's my form of prose. He told me that I can't excuse poor grammar with prose, and claiming I don't understand what prose is. So I told him
>Prose doesn't care if it's hard to read
>Prose doesn't care if it's grammatically correct or not
>Prose doesn't care if it's unintelligible
And he laughed at me. Who's in the wrong here?