crzygosu87 says:she just says that she used to be friends with her before they even debuted since their offices were close. They used to keep in touch. kakadux says:joo said that she's is close to yuri from SNSD and that they also have been like good friends before their debuts, because their offices are near by. she also added that she actually has yuri's cellphone number and that they are still in contact quite often...
Okay, found more Yusica stuff, it's a he said, she said this time. I tried to translate it using online translators but failed miserably. But it's about their 뽀뽀 (put it in a translator and you'll know what it means ).