It was great for trying. Can I admit that it was not the pairing that I loved so much as the situation and the writing? It was written well and I could easily see a number of people taking those roles.
First off it was KyuHyun, and if you had put him with Zhou Mi or even Han Geng it would still have worked. It's KyuHyun there are few that he doesn't go well with.
The situation and how it was handled was hot. Spilling the words into each other's mouths and touching and singing and... that was what I liked/loved best about it.