There isn't much of note from Bruce between the kiss and the apartment, except a very subtle air of relief (easier breathing, slightly slower pulse) when the kiss breaks and they're inside. There'd probably be more, but he often has a choke-hold on his biometrics.

That relief intensifies when they're inside the apartment. He takes his suit jacket off immediately and tosses it on the nearest piece of furniture. "I hope so. That was a lot of work, if he can't sell the pictures for a decent price. You seem to be have fun with this."

...Bruce is going off toward the kitchen and 'junk' drawer to find the take out menus. Sue him - seriously, he's loaded. He's also starving.