Good Job, Good Job

Lee Kang-joo is a ceramics technologist and single mother. Her ex-boyfriend Yoo Ho-nam hadn't known that she was pregnant when he left her to study abroad. Now a psychologist, he returns to Korea, but Kang-joo hides the fact that he's the father of her daughter, Byul. Meanwhile, Choi Seung-hyun is a fitness club owner and the son of Kang-joo's mentor and boss. He has loved Kang-joo since high school, but not wanting to lose their friendship, she's remained unresponsive to his romantic overtures. [About] Good Job, Good Job is a 2009 South Korean television series starring Chae Rim, Um Ki-joon, Kim Seung-soo, Kim Jung-hwa, Choi Daniel and Seo Hyo-rim. It aired on MBC from March 14 to August 2, 2009 on Saturdays and Sundays at 19:55 for 40 episodes. [Source: Wikipedia]