I don’t pretend to be an expert on your psychology, Granger, and it ranks at the absolute bottom of my list of interests.  As I was saying,  the marriage vows alone don’t cause such reactions. This is most likely a result of the combination between the vows and the brand. It’s uncharted territory, seeing as the brand is never used on witches or wizards. Two different types of powerful magic, used to tie people’s souls and minds together, who knows how they can interact.