Ahh, I really wish they would have continued with the anime, but unfortunately the author was not happy with how it was turning out, so they stopped with the series very abruptly. That's pretty much why I started to read the manga just so I could continue on with such a sweet story.
Bah, it upsets me a little when you bash Yukino .. ;_; .. she just believes at first she has to put up a front and be flawless and be something worthy of others to look up to. There are many people who experience this self-made obligation. But she learns to let go of that pride and be more like herself. It's very realistic in some cases ... but other times people never let down their guard and allow insecurities to consume them ... like in Arima's case it has some dire consequences.
Haha .. I ramble on too much. xD But anyway, despite the anime was well done with as far as they decided to go with it ... it's a shame they didn't continue. I reccomend to read the manga.