Arranged Marriage/Kingdom Au

~1~
Character A and Character B are from 2 different kingdoms on the verge of war because kingdom B killed (pick a family royal member from kingdom A) and they arrange for character A and B to get married. They have a ball and Character A and B meet. But they don't know that they are getting married to eachother. They hit it off right away and agree to run away together.
You can take it from there
~Inspired by~
HoneyPlz123

~2~
Character A has secretly fallen in love with Character B from an enemy kingdom. They sneak out just to see each other. One night character A is called into the throne room to find out that they are going to get married to character B.

~3~
Same as Scenario 2 but character A will be marrying character C