The Billionaire's Contract Wife

I might hold the world record for the strangest reason to get married.
To get back at my cheating ex, I had a reckless one-night stand at his engagement party.
My delicious mistake? He—the richest, most ruthless CEO in the city.
Now, he’s blackmailing me into a temporary marriage contract.
He needs a wife to fulfill his own agenda. I need an escape from my crumbling life.
The deal was simple: no feelings, and a clean break in five months.
But the man who demanded this arrangement is now breaking every single rule.
He said this was business, so why is he fighting to make our temporary marriage permanent?