Percy's ability to recover was much faster than Katie's. If not recover, than conceal. Behaving as if nothing happened, his blush already started to fade as he concentrated his mind on the task at hand.
"We need to take a cab." At the curb, he hailed a taxi and opened the door for Katie, letting her slide in first before joining her . Leaning forward, he told the driver the address and then sat back. "No, I never got around to saying, and it wouldn't be a surprise if I told you now, would it?" he said, smugly.