There is a recent article in the IFS magazine, entitled "Yu-Na Kim--Healthy, Happy, and Ready to Work," in which she briefly talked about Festa on Ice and her working experience with Johnny. Here is the quote:

One of the highlights Kim said was performing a number with her friend Johnny Weir who she described as being very special. "He is the best. It was a lot of fun performing with him," she said.

See the whole text here
http://www.ifsmagazine.com/forum/index.php?showtopic=585