aww many couple already break-up 

1) KimWooBin and Model Yoo Ji Ahn

http://www.soompi.com/2014/05/13/kim-woo-bin-and-model-yoo-ji-ahn-reported-to-have-broken-up/#.U3S0FIGSz5o

2 ) Actors Yoo In Na and Ji Hyun Woo

http://www.soompi.com/2014/05/13/actors-yoo-in-na-and-ji-hyun-woo-have-broken-up/#.U3S0e4GSz5q

3)KimBum and MoonGeunYoung ( one of my fav couple )

http://www.soompi.com/2014/05/14/kim-bum-and-moon-geun-young-have-broken-up-agencies-confirm/#.U3S1O4GSz5o