On the latest episode of 'One Night of TV Entertainment', Yoo Ah In appeared with his castmates from the upcoming film 'Tough as Iron'. Actor Kim Jung Tae�asked him, "Do you still contact Kim Tae Hee from SBS' 'Jang Ok Jung'?"�

Yoo Ah In answered honestly, "Yes, we call each other sometimes. I last talked to her a few weeks ago." Kim Jung Tae then responded, "Give me her phone number."

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The young actor was also asked who he likes better between Kim Tae Hee and Kim Hae Sook, who plays his mother in 'Tough as Iron'. He yelled, "Mom," making Kim Hae Sook pretty happy.

'Tough as Iron' hits theaters in October. Check out the international trailer below!