>>86886160>was the Queen and King's marriage a way to unite Mewni? was Mewni divided between the Butterfly family and the Johansen family?
Moon's relatives don't like the fact that she married River and insists on staying married to him.
River wants to commit genocide on a neighbouring kingdom because its monarch looked at his wife with "the googly-eye."
So I suppose they married out of love. Much to the frustration of their respective clans.