It’s really interesting that people are so focused on Rick’s supposed closeness with Michonne when he’s actually leaving her completely out of the loop.
Like, he’s talking to her, telling her he’ll give this place a real shot, putting on the appearance that he’s trusting her to be making these decisions— meanwhile, he goes to bury a gun, proving that he’s thinking the exact opposite of what he’s saying to her, and that they’re not working on the same wavelength at all.
Then, he appears to be slowly trusting Alexandria on the outside: coexisting with the people, settling down, allowing his people to live in their own houses, accepting the position of constable. To her, he’s accepting this place and giving it a real shot. But the minute he’s away from the rest of the group— including Michonne— and alone with Carol and Daryl, he states what he’s really thinking. No, he doesn’t trust this place, and he’s ready to take it over if he has to. He’s not going out on a limb like he’s led Michonne to believe. He’s not “trusting again” or “letting go” like she asked, despite what she thinks.
Honestly, there’s hardly any real communication there, and if anyone is intimately engaged in Rick’s train of thought, it’s Daryl and Carol, because they were doing the exact same things as him even before he announced his plan. Despite what everyone seems to think, Michonne isn’t even in the loop as far as Rick’s mentality and plans are concerned. He reserves that for the people to whom he’s closest: Daryl and Carol.