The way Silver saw Flint's partnership with Gates break down before Flint saw it. And saw Flint fight against the inevitability of having to kill Gates, and lie to himself about it, and then kill Gates anyway, despite his own desires and intentions because that's how it had to be. He sees the sadness and regret, but it doesn't change anything.
Is it really surprising that Silver thinks the same thing is happening between them in S4? He thinks that he's seeing it again, and Flint is lying to himself about it again. But even if Flint doesn't WANT to destroy him, that doesn't make him safe. And he just cant see the ways Flint has changed.













