Referring to Jason himself:
There was never any mention of Jason and Jyslin's marriage having to be dissolved. And also there is this:By sending him that flower, Empress Dahnai was informing him that she was taking his hand in marriage.
So it would seem that a male can have more than one wife. Is that correct? And does it go the other way also? At any rate, if it is allowed it must be really rare - to the point of being allowed but unheard of, since I don't remember reading about any marriage that is anything other than 1:1.Your son’s marriage to my daughter will be paper, that’s it. They’ll both have their own lives, the only stipulations are really gonna be that he lives in her house and he can’t have an official marriage to another woman.
(I should probably admit here that I have more than the usual reader-type curiosity here. I've been thinking about doing a fanfiction in this universe and trying to get as many facts straight as I can, not wanting to step on Fel's toes.)