Nightwing is your boyfriend, even though you don't know his real identity.

How did it start? Well he came injured to your house one day. And slowly it became a habit. Then you started dating even though he kept his real identity hidden. But you wanted to desperately know who you were dating under the domino mask. . He came into the apartment through the window as usual and asked for a cup of water. You secretly mixed something that would make him dizzy and unconscious. He drank the water with no hesitation.

"Babe, can i please remove your mask??" You try negotiating the polite way but he shook his head "I'll tell you, soon" he said. The effects of the drug started to kick in. "Hey... Open the window please, it's suffocating." He said as he became dizzy. "Sure" you smiled and opened the window.