Lee Min Ho and Kim Bum have been friends since their "Boys Over Flowers" days. But despite the fact that they remain close, "The Heirs" star had no clue that Kim Bum was dating Moon Geun Young.

"I had no idea," said Lee Min Ho of the relationship between the "Goddess of Fire: Jeonji" co-stars.

"Both Kim Bum and I were so busy with filming our dramas that we could not stay in touch but I have congratulated him," said Lee Min Ho. "Kim Bum is quite the man. His romance style is similar to Kim Tan's."

To read the article, visit kdramastars.com.