Mr. Goodbye (2006)

Yoon Hyun Suhis an adoptee who grows up in the United States. He becomes successful as a top manager of a hotel chain. He is assigned to do business in Korea. He falls in love with Choi Young In, a sassy concierge from the hotel he is assigned to. There is trouble still looming because Kang Soo Jin who is Hyun Suh's best friend's ex-wife comes back with vengeance in mind. The three become entagled in this love triangle.