Park Gun Hyung found out who the father of Kim Sun Ah's baby is.
In the 9th episode of 'I Do I Do', character Jo Eun Sung heard about the pregnancy through Hwang Ji Ahn's best friend, Bong Jun Hee.
While Bong Jun Hee was giving Jo Eun Sung a massage, Jo asks, "Is Hwang Ji Ahn talking with the father well?" Bong responds, "It is someone from the same company."
Jo Eun Sung is surprised and asks, "Could it possibly be...?" but right before he could say the name, Park Tae Kang storms into the scene and punches Jo.
Park Tae Kang is misunderstood thinking that Jo Eun Sung is having an affair with another woman against Hwang Ji Ahn. Park yells at Jo saying, "You dirty bastard," in anger that we could not hold.
