It was oddly assuring to see her here -- Selina Kyle. If anything, it meant that Catwoman was taking a night off from the streets or at least delaying it for a little while. Before her arrival, Bruce Wayne had been in the Batcave, which he visited every so often during the party when he needed a break and when he claimed the need to check on his city. He might have been waiting to see if she would show up. Bruce Wayne hadn't made all that of an impression on Ms. Kyle, but that didn't mean Bruce didn't look forward to seeing her even away from their rooftops.
He spotted her from across the room. He took another sip of his drink -- scotch on the rocks -- before setting it aside. He felt the alcohol slide down his chest as he focused on Selina and straightened his jacket. He moved smoothly across the floor, making small talk with other guests before finally reaching her.
"Ms. Kyle, it's a pleasure to see you, as always," he smirked from underneath his mask. If he were to admit it, he wondered if she would recognize him and if the puzzle pieces would fall into place. He had long been aware of her identity but would she recognize him clean-shaven and in a gold mask? He watched her carefully to gauge he reaction.
Nevermind that he's practically smiling at her. That would never give things away.