If he'd been stealing glances before and admiring her beauty quietly, now he just voiced it out openly.
Just a few hours before, they were doing HOT Yoga in which he was granted access to view some of those curves he'd been admiring ever so quietly and sneakily before, just inches away from his line of sight, lol. He even admitted openly that the direct view of her butt had stirred something inside of him, enough for him to be embarrassed about it and looked away awkwardly. After those direct views of her curves, he knows now that he is allowed to just admire his wife's beauty openly. This time, he was not sneaking glances anymore. He just looked at her boldly, and when his wife asked "why?", he answered "Cos' you look good