"I grew very fond of him, he was so gentle and kind. He seemed to know just how a horse feels, and when he cleaned me, he knew the tender places and the ticklish places. When he brushed my head, he went as carefully over my eyes as if they were his own, and never stirred up any ill temper." (5.21)
Here's something Beauty wants you to understand: A horse pays attention to how you treat him. John Manly's careful, attentive grooming is much appreciated here.