Jo In Sung revealed how his good friend Song Joong Ki disappointed him in the past.

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Jo In Sung featured as a guest on the May 25th episode of 'Happy Together', where he discussed his close friendship with Song Joong Ki and Lee Kwang Soo. The handsome actor referred to Song Joong Ki's 'Daesang Award' at the 'KBS Drama Awards', saying, "When he made his speech, he didn't mention me. I guess he wasn't thankful to me."

He later added, "I'm happy he's successful." Jo In Sung also revealed he had gifted Song Joong Ki a trip to Thailand to celebrate his discharge from the army. 

What good friends!