This is a really good one ^^;
http://www.asianfanfics.com/story/view/373851/lingering-angst-kyuhyun-kyuwook-ryeowook

You may want to check out:
1)"VANISHING ACT"...it just finished days ago and the writer currently is writing a prequel for it called "SHAKING UP" 2)"NEMESIS LOVE" 3)"CHECKMATE" 4)"1337" this one is completed too 4)"MY FATHER'S LOVER" 5)"ENTICING" also completed 5)"ONCE A FANBOY ALWAYS A FAN BOY" also completed (long time ago and there is a sequel too)I really liked this one^^ 6)"THE VIEW OF THE UNIVERSE" completed too and really liked this one too 7)"SHAPESHIFTING" completed 8)"PLEASE LEAVE ME FOR GOOD" 9)"MY ANNOYING BOYFRIEND" completed 10)"Y UNIFORMS" y oneshot^^
I don't know if you'll like these suggestions and they'll match your taste or not but I hope they help.
Please do tell me if you read them already or if you dislike them so I can recommend another fics.
Have a nice reading :)

kyuwook? ~feeling betrayed~
excuse-me, i will just go there and crying in silence.. *sobs*

I wrote a kyuwook fic called hidden, and then I know a really good kyuwook writer, here is her link: http://www.asianfanfics.com/profile/view/109210
She writes really good kyuwook, I recommend too close to love you to read first from her