If I were MIR's wife, and you delivered an "I won't share you with another man" speech to me RIGHT AFTER ROMANCING ME AND SPENDING TIME WITH ME FOR TWO WEEKS . . .
I think I would think "He's afraid to lose me; he's not going anywhere."
well it all depends what comes after that. i.e., if he follows up, as I wrote before.
if he would give her the "I'm not sharing you" speech and *then* romanced her for 2 weeks, then maybe she could reach that conclusion because in *that* case his actions would contradict his words.
The timing doesn't matter, in my opinion. Because she will know that HE knew (about her affair), the entire time he was romancing her, his actions will have ALREADY spoken louder than his words.
He's taking a basic "I really, REALLY mean it this time!" position, and that doesn't work.