In the Doctrine & Covenants 132, we learn all about the nature of and difference between a marriage that will be eternal and those who end at the end of mortal life. The difference relates to whether or not you marry in the temple (and keep those covenants) versus if you marry civilly. The idea is that your choices determine these outcomes. However, what if you really want an eternal temple marriage but you settle for civil, hoping for more at some point? Or even possibly hope you will be given an opportunity on the other side for eternal marriage because you weren’t able to find it here? What about any number of other life circumstances?
What We Know:
We at least know this from what is given in D&C 132:15-21. These scriptures are a bit long, but worth the entire read since this is the main given doctrine on the subject: