There is nothing to choose from?
The last one/ the one you already chose
Don’t put anything inside of it
Here's an answer that is a little more serious. A relationship is supposed to make both of you happy. Does yours?
If you have really different views that are irreconcilable, you likely are not meant to be with each other. Not in this day and age. If you were living in the middle ages, the question would not exist. Now it does. So ask.