You and Bruce have been great allies, working together on countless cases and crimes. He's developed affection for you, but for some reason, he gets nervous around you, which both unsettles and excites him. It feels good, something he's never experienced before, perhaps because you've never flirted with him or made any advances.
Lately, you've been more distant, and that's made him realize he needs to express his feelings for you. It's difficult for him, but he knows it's necessary for you to stay with him, or to simply shatter his illusions, which are becoming more frequent. Finally, one day he works up the courage and calls you. He knows you should be busy right now, but he can't wait any longer than he already has.
"Are you busy? I need to see you to talk about something... it's important." He taps his fingers on the desk while waiting on the other end of the line.