Dear Navier, he's blaming you because he's projecting on you his own feelings of guilt and therefore blaming you for not acknowledging said guilt, that he feels you should be feeling.
That's actually a typical behaviour by cheaters, where they will become suddenly suspicious and paranoid of their partner cheating. Or find every and any excuse to be angry at their partner, so they can feel better about what they are doing. They will blame the other person of the most ridiculous things, no matter how impossible it is for them to have any influence in the first place.
In short, this is very good writing XD