Truth!
I have argued with her in the past about this, asking, "why does it not make you happy to think of your man as desired by other women...?" and other such lines of thinking. Also, "why would it occur to you to NOT tell me if a man is hitting on you?"
She does some kind of magic though- when we argue, she says things that make me pause and think, "oh shit- that makes perfect sense!" But then half an hour later, I have no memory of what that was or why I thought it was right.
"Ah, those endless forests, and their horror-haunted gloom! For what eternities have I wandered through them, a timid, hunted creature, starting at the least sound, frightened of my own shadow, keyed-up, ever alert and vigilant, ready on the instant to dash away in mad flight for my life. For I was the prey of all manner of fierce life that dwelt in the forest, and it was in ecstasies of fear that I fled before the hunting monsters."
Jack london, "Before Adam"