Betsy Butterfly in "A Deep Plot"

As time passed, Betsy continued to see a great deal of Joseph Bumble. And she noticed one peculiar thing: Although he talked continually of his cousin Buster Bumblebee, the Queen's son, no one had ever seen the two together.
"How does it happen," she asked Joseph at last, "that I never find you with your cousin? Aren't you friends?"
"We're certainly not enemies," said Joseph Bumble, "though I must admit that we're not quite so intimate as we might be. You see, Buster and I have different tastes.