I need help please!!!

I need to find a yoonsic story that i use to read but I don't the title and I don't know if the author has deactivated or not. 
The story is about yoonsic after Jessica was forced to leave GG and one day yoona and jessica met again on a plane and they start to contact each other again but jessica make yoona promise not to tell the others members that they met again. 
I really want to read this story again. I hope anyone can help so if anyone have read or you are the author of this story please tell me the title. Thanks in advance. 

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