I agree. Apart from the main girls, Lily and Quinn are the only ones with defined paths (and Zoey now too). Too many people got hung up on the word 'Rolling' and refused to see it as a relationship, which it has been since Episode 9.
Anyone not seeing it was a relationship path is not paying attention. Using comments like 'don't fall in love with me' to say its not. Maya said the same thing.
Nicole, Jade, Nora, Rio had the beginnings of a path, we will have to wait and see if the develop (I expect they will).
And DPC has now added hints of potential paths for Cammy, Mel & Sarah (and to a lesser extent Tara & Tiff).