Tony An revealed that he regrets ever dating his friend's ex-girlfriend during filming for the upcoming 'Witch Hunt'.�

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The H.O.T�member stated, "I dated my friend's ex-girlfriend without telling him. Later on, I found out that he actually knew the entire truth. In the end, my friend and I made up, but whenever we drank, I would end up apologizing for the incident all over again."

Tony An's full story will be revealed on JTBC�on October 2 at 11PM KST!