My Secretive Wife (Moved to a new link)

Athena is an agent in a private agency under the wing of the International Police. Her goal in joining the said agency is revenge. But, she had a change of heart and thought of retiring after realizing that her world seemed to revolve around hating and capturing the man responsible for the death of her parents. The supposed last mission became so chaotic that she escaped and met Marco along the way. They fell in love, but she decided to leave him so he won't be involved with the mess she was with without knowing that she was pregnant. Years later, Marco found her by chance.

Marco is a man with a few words. He has a monotonous daily life - work and home. He seems arrogant because he doesn't speak much, but he is warm-hearted. This persona of his came out when they met. When she left him, he did not stop searching for her, and his patience was rewarded by meeting her again with their love child.