User blog comment:Skyrim Addict115/How to divorce your spouse in skyrim/@comment-6881629-20150330110134

You cannot remarry without using console commands or mods. Some spouses can be killed when your married they get given the protected status if they get critical damage they go down on their knees and can be then finished off, but Mjoll and Ysolda (with patch 1.5) for example are marked as essential and can not be killed (an exception to this may be the sacrifice in the Boethiah quest).