i really like the way that you interpret Naruto and Sasuke's relationship: it makes a lot of sense. And i guess it may just be me, but i personally don't think that it's all fluff and cuddling like other people make it out to be.
It's rough, it's painful, and a lot of it IS just guess work --and a heck of a lot of dumb luck.
There aren't any grammar, spelling, or punctuation errors that i can see. Your voice is really strong and you get the message across in a way that hits the reader like a good punch in the gut that they can't bring themselves to forget. So yeah, it was great, and i'm going to stop ranting now...