I wonder if its because of the magic? Biologically speaking, it doesn't make sense. But magic has been known to alter things on a fundamental level if there's another of it and a strong enough desire. Since you're low magic, there's nothing to compensate unless you alter the biological make up of the partner.

[He pauses at that, food halfway to his mouth for several too long beats to be polite.]

[He blushes, and eats the bite.]

Yes, well, I would be better at waxing poetry when I don't feel like passing out into rice.

Gratitude?