is there any story that's has the same plot as this?

We’re looking for “man fakes it (being in love) and accidentally makes it (falls in love) with a target for a murderous plot”

Winter wolf
is one that pops to mind

I have one that is bit similiar with the og villain love our transmigration fl. Titled "I'm the Ex-Girlfriend of a Soldier" (●'◡'●)ﾉ