Hmm, I think that would depend on the spouse, also. Perfectly rational people could freak out at the thought of the perfectly Muggle-perceived wizard being a wizard. Of course, you trust your spouse in a committed relationship, but the concept of magic being real isn't just some minor detail in one's life.
Great, now I feel like conducting surveys on how many muggle-wizard-relationships survive the 'coming out'...

Kat//Hufflepuff