“Rex was loyal; not just the professional, soldierly kind of loyal, but personally loyal. He knew what might happen if his general was caught being out of the loop—a loop he really should have been in. Anakin just hoped Rex didn’t know why. Do I, though? I think Rex would understand. Of the few beings I feel I owe an explanation about all this subterfuge, he’s one of them.”
— Anakin Skywalker thinking about how Rex is one of the few beings on the galaxy he feels he owes an explanation for lying about his secret marriage. No Prisoners by Karen Traviss.