Although I would only give this film three stars, its faults really should not put you off watching this brave and innovative piece.
First, the sex! Well, as others have mentioned, it does form the cornerstone of the story, and its gritty depiction is so refreshing compared to the airbrushed trash we're used to from bigger budget films. Personally I found it interesting more than erotic. I wouldn't in any way describe this film as porn, although I'm sure it will sell on its notoriety. Such brave performances from the two leads, I'm amazed at how far they let themselves go.
This film has still passed the certification process, so probably represents about as far as an 18 rating can go in 2011. Mostly, "harder" moments are implied or oblique. It does make you ponder what an 18 film will show in another 20 years.
So why only three from five? For me, I couldn't fully connect with the over-reached plot, nor the self-indulgent waster art student leads. Their characters were interesting, but they are basically both in need of a wash, some counselling and a proper job. However, even though I didn't like them, I totally got that they were perfect for each other, and this is where the film somehow manages to dredge up a feeling of sweet romance.
Ironically, towards the end "Brilliantlove" tries to poke fun at the same arthouse culture that it comes from itself.. almost some attempt to say I'm Too Cool Even For Art School. Didn't really pull it off, it's not that clever, and when all's said and done the story is pretty standard fare in essence.
It is very creditable though, and as a Northern lad myself I think it's fantastic that it was produced and shot in the North, even though it did little to really break any sterotypes. It's important to show that there really is talent in the country outside of London.
So, a very fresh film that makes you think, let down by some contrivances and pretensions - but please do watch if you're reading these reviews, it is something very different and still worthwhile.