Book like the night agent

Hello everybody!
So i just started my rewatch of the night agent on netflix and now I am in despreate need of a book that could be similar

So I am searching for a thriller /romance
In which the mmc is tasked with protecting the fmc
And they then go on the run because they unraveled a conspiracy
I dont want the fmc to be part of the FBI or something like that
Soooo does anybody know something like that?
thank you <3