If you've been watching "The Master's Sun" lately, you may have heard the characters use the expression "Candy Girl" several times.

So Ji Sub's character thinks other people are confused about his relationship with the seemingly crazy character played by Gong Hyo Jin. And he's a little confused by it himself. When he is pretending to be engaged to someone else, he suggests they define their relationship and that Gong Hyo Jin should become his Candy Girl.

This means he will become her "sugar daddy" and sponsor her, buying her a home and a car and paying for her expenses.

She also comments that people probably think she is a "Candy Girl," a woman who wants to marry a rich man or be taken care of by him.

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