Both their labels told news outlets on May 2 (KST) that the couple has officially registered their marriage. Lee Dong Gun further took to a letter addressed to both the media and his fans, announcing the above as well as more news that Jo Yoon Hee is expecting.

Lee Dong Gun's letter reads as follows: 

"Hello, this is Dong Gun. I am writing because I thought I had to let you all know first. 

Everyone, I have become a lawful family with Jo Yoon Hee through trust and love, whom I met through a production and have been in a loving relationship with. While we were preparing for our next step into marriage, we gained the joy of a new life, and with nervous hearts, we are awaiting our unborn child.

For now, I plan on focusing on my drama 'Queen for 7 Days'. After the production ends, we've decided after discussing with our parents on both sides that we will hold a quiet wedding with family and friends. 

I am cautious as to how many of you who have cherished and encouraged me will take this news. But in order for me to become a better actor and also to become a happier person, I've come to this decision, and hope that you will encourage and congratulate me. Please watch over us with warmth. 

I will do my best to become an even better actor who can repay your love, as well as the trustworthy head of one household." 

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Congratulations to the couple.