In a touching yet heartbreaking letter penned by VIVIZ SinB to the late ASTRO Moonbin, she revealed her regret and promise to him.

VIVIZ SinB Reveals True Feelings in Letter After Best Friend Moonbin's Passing

In a letter, VIVIZ SinB remembered his 18-year best friend late ASTRO Moonbin.

On April 27, the female idol who is currently on a hiatus left a lengthy letter to Moonbin in the memorial space created by ASTRO's agency Fantagio Entertainment for the latter. The space which was extended until June 6 has been laminating letters from celebrities and hanging them on a tree with a yellow ribbon.

ALSO READ: ASTRO Moonbin's Memorial Space Extended, Fantagio Announces Details in Official Statement

SinB's letter then drew the attention of K-pop enthusiasts and netizens, as she has been a close friend of the former Moonbin since they were kids.

In her letter, SinB greeted the male star and revealed her regrets, saying:

"Bin, It's me, Eunbi.

How's it going there? Full of things you like? I hope so. We've seen each other for a long time, right? Ever since we were kids. But after knowing each other for 18 years, I wonder what was so embarrassing that I couldn't say pretty things to you aside from being prickly? I regret it so much."

She continued and promised Moonbin of taking care of his family in his stead, saying:

"For a while, I'll regret, grieve, remember, be sorry, and think about you all day. I think you are seeing me from up there, sighing and wondering why I'm being like this and feeling embarrassed, but please understand. There are a lot of things that I want to say to you but I will take my time and tell you bit by bit.

As you always asked me to do, I'll take care of Sua (younger sister), aunt, and uncle. So don't worry about anything now and live only for your happiness."

SinB then made K-pop fans and netters feel the pain after revealing her true feelings about his best friend's passing.

"I was reassured and happy to be with you since our childhood, our teens and 20s, Bin. I thought I would grow old with you until we became a grandmother and grandfather, but it seems I'm the only one who's going to grow old now. Smile and tease me as much as you want while watching me grow old from there! When we meet later, let's fight as much as we want."

To conclude her letter, SinB attested to Moonbin being her best friend and left words of affirmation.

"Bin, you were a reliable and precious friend to me, and you give me a lot of strength just by your presence of you. I'm sorry to say this now, but if you ask me where my best friend is, I'll answer it's you without hesitation, as I've done so far."

Bin, who is wonderful and my pride, you are so precious! I'll go see you often. Rest in peace. I'm so sorry and sorry again. Please know that I love you so much! Thank you and I love you, you kiddo."

VIVIZ SinB Takes Break From Activities Due To Poor Health

Meanwhile, SinB is a former member of the group GFRIEND who is currently promoting VIVIZ together with Eunha and Umji.

Born in 1998, she is 26 years old this year and is one of Moonbin's best friends, who is the same age as her. Even before becoming idols, the two, who both came from Cheongju were childhood friends. They used to learn dance together as kids and also do some modeling jobs together.

Once they debuted in the K-pop scene, they maintained their friendship with their 98-line squad.

Following Moonbin's passing on the 19th, SinB wasn't able to attend his funeral on the 22nd due to a scheduled activity abroad. But due to poor conditions amid mourning, Big Planet Made announced that the trio will take a temporary break to regain their health.

READ MORE: VIVIZ SinB Worries People After Clip Showing Poor Health

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Written by Eunice Dawson.