I mistook the male lead for a spy

Synopsis
I realized the truth through an unjust death.
It turned out that I was the secondary villainess in a war story.

“If that’s the case, I’ll film my villain mukbang!”

After being reincarnated, I found my new stepfather and built trust with the head of the family.
What I used to mess with the villain? The male lead’s exile backstory.

The male lead, exiled at a young age, returns as the king.
Filling the gap in the meantime is a double who looks exactly like him.

“So, this guy pretending to be the prince is actually a spy from an enemy nation, right?”

A man’s profession a woman shouldn’t miss: spy!
A spy who will disappear once the male lead returns after completing his duty!
Truly a perfect husband material!

…Or so I thought.

“I need to check if the intelligence report contains any lies.”
“You really take an interest in state affairs.”
“Huh? Well…”
“I know, I know. If you’re going to bore me with talk of royal duties, you might as well just kiss me.”

“Hmm… do they usually go as far as kissing?”

For a woman he doesn’t even love, all for the sake of his mission.
Faced with the male lead-spy’s bold affection, I felt utterly confused.

Did the setting where the male lead and the spy were swapped actually hold true?

It seems like the original story betrayed me.
Does that mean the husband I’ve cherished since childhood is actually the male lead…?

“Can this marriage be annulled?”

“Do you remember when we were kids?”
“I’ve never forgotten even once.”
“…”
“So I can forgive everything you do.”

When he pulled me close, my world flipped upside down.
Ah, I need to get away quickly.

“There won’t be any slow pace between us.”

Can I safely get a divorce…?