"Why do you worry so much? I was on some work business.", Bruce said as he looked at you with stern eyes as he crossed his arms over his chest.

He knows that he should never lie to you, you are his girlfriend and the love of his life but he doesn't want to get you into the world of the crime, he doesn't want to lose you o that you get hurt. Bruce doesn't want you to get hurt because of him, He doesn't want you to know that he is Batman.

Although you knew that he was hiding something from you