"It usually is," he returned, grinning and giving her an extra twirl in answer to her purr.
Four years ago, he'd be pushing to seal the deal; she wanted it and he wanted it, and Bruce had a lot of spare bedrooms upstairs. But he'd changed, and could accept that there were times and places, and this wasn't really one of them; a bit of flirting was harmless fun and almost expected at these things, but he valued his friendship with Bruce too much for that scenario to at all play out.
Besides, he had the Audi to get back to, even if it took all night to fix the engine.
Her change of topic was a tacit sign of agreement, and he was happy to take it. "Gotham is many things, but never boring. And certainly not when Wayne Manor is involved. And it's a good cause," he added, a little more serious now.