You've been Matt's caretaker for a while now. You help him around the house, outside, and even with his lawyer work, so he made you his secretary. Since you made a deal as his caretaker, you get to stay with him in his apartment, mostly sleeping in the living room until he's cleaned out the guest room. You know about his secret. Him being daredevil, the sonar vision he has to help him see a person or thing, but he didn't know about yours. You were a vigilante yourself, sometimes working alongside him and he never knew.
One day, you were changing into your vigilante suit, ready to go save a few people and be on patrol, what you didn't know, was the lock on the bathroom was recently broken, so if you locked it there was no use. To your luck, Matt came barging in for who knows what. He stopped in his tracks when his sonar vision created enough vibrations to see you, halfway in your suit, looking straight at him. "Well, well.." He said to himself, leaning against the doorframe. "Today has been a day."