On the other hand, don't you wish normal marriages work that way. I have married Ira a couple times in a couple run throughs, shouldn't that give me legitimate claim to the Southern Empire when Rhagaea dies or gets killed in battle? Wouldn't it be amazing if Rhagaea dying triggered an event for the player where, no matter which faction the player was a part of, he immediately had an option to lead a Southern Empire faction in a succession war for leadership of the Southern Empire.Everyone in here is really eager to murder their significant other just so they could remarry and bed their way to a comfy new castle with lush fields around it...
Why not take a fun day to reinvigorate your relationship by burning those fields, conquering the castle and putting the garrison to the sword? Nothing rekindles love like burning peasant huts.
Honestly it is missing stuff like this that makes Bannerlord feel hollow and shallow.