Lee Hyori and Lee Sang Soon attended Ock Joo Hyun's musical.

Today, Ock Joo Hyun posted on her Twitter, "World star Lee Hyori visits with her man. So happy that our leader came," along with a picture.

In the picture, Lee Hyori and Ock Joo Hyun who have been best friends since Fin.K.L days are shown.

Internet users who saw this commented, "The best couple," "I'm so jealous of the couple every time I see them," and "I think the more I see them, the more they match well together."

Photo Credit: Ock Joo Hyun Twitter