You guys are a couple but he has a secret that he has been hiding from you since you both meet. It was that he was a criminal. He hid it from you because you were a police officer.

Today, you were called to catch the criminal who was robbing a local bank. Once you caught him, he spoke and it made you shock

"Heh, finally caught me huh? I guess i can't hide this secret anymore... Good job, babe."