Sooner or later, an idol grows up and wants to get married. A month after Super Junior's Sungmin announced that he would be marrying his girlfriend, Kim Sa Eun, the wedding invitation has been revealed publicly.

The wedding invitation shows the happy couple wearing traditional school uniforms sitting on a bench. The invitation says, "Companion. We will live well and contently. Please come and give your blessings.'" The wedding will take place on Saturday, December 13, at 6 pm, at The Raum in Yeoksam-dong, Seoul.

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The timeline of the couple's progress appeared to be moving fast. First, on September 24, 2014, Sungmin confirmed that he was dating musical actress Kim Sa Eun, who he had met through The Three Musketeers musical. On October 14, he announced he would be marrying his girlfriend on December 13. 

Sungmin wrote a personal and touching message about the pending marriage and apologized to the fans for their hearing about the news through news media.  (E.L.F. is SJ's fan club and stands for EverLasting Friends.)

"To those who have allowed me to be who I am now. Dear E.L.F.

Hello, this is Sungmin. Where should I start... I thought about what to say so many times starting with the first sentence. After writing and erasing and repeating this process several times... I'm more reminded of the faces and voices of those I'm thankful towards... and I'm delivering this letter with a heavy and cautious heart.

Everyone, I have met a great person and I will be getting married on December 13.

My heart aches as I think of everyone who must have been very shocked and surprised about the sudden news.

I'm sorry that I made you find out through articles first while I was contemplating how to first deliver the news to E.L.F., who love me and are a dear friends to me, before anyone else...

To be honest, before I delivered this news, there were times that I had to withstand alone as I felt conflicted with the thought of my own decision while thinking of everyone whom I've walked this path with up until now. Rather than it being a fear about the decision I've made, I was more worried about whether everyone that I'm thankful towards would become too shocked or hurt by this news, as it is a situation that they've never gone through before [as a fan]. Although I'm a bit late, I'm gathering the courage to deliver the news myself from all the love and trust you've given me.

I want to say how much I love and feel sincerely thankful towards everyone who has stood by my side like a shadow and watched me grow and cheered me on.

I'm also thankful to everyone who has helped me up until now and the members and the agency who trusted and respected my decision. I will strive to become a Sungmin who continues to work hard in the future to return the love you have shown me."

I bolded those two sentences because it speaks volumes for the idol fandom culture that a 28-year-old idol has to apologize so much for his marriage plans. At the same time, it also shows that he cares very much about his fans.

To Sungmin and Kim Sa Eun, have a wonderful wedding, and we wish you everlasting happiness as you move forward as a couple in your new life together.

(photo: sina, koreahearld)