f(x) Luna leaves message for her close friend, Jeeun Lee, who has passed away recently

Luna left a message on her Instagram for her close friend Jeeun Lee, who passed away on November 27, 2019

In the message she wrote:

''Jeeun, 10 years we've been together
Did you have a hard time or have fun?
My friend, I miss you so much
My dear friend ... I always worry about you when I'm in trouble You're only worried about me I can't believe you're next to me ... I don't wanna admit.
But I'll try to let you go now I love you so much Don't be sick there Don't be bothered or sad You just have to be happy ♥ ️
I will remember everything you left here.
Say God is there, let's live together! I'll remember to say I overcome it I love you so much
I'm sorry I couldn't hold you to the end
I love you, my friend, I love you.''

It's is currently unknown how Jeeun died. But it seems like she was hospitalized for quite some time.