This was such a different twist on a billionaire romance. He and his family run a secret mercenary business that does all kinds of good in the world. His long time similar estranged bestie finds herself accidentally married through a prank by her dead brother and they have to stay married for show as all kinds of things start to go wrong. 

The way the banter just flowed in this book just made it all flow and go together as so many things keep happening. I really need to look up the reading order for  her other books in this world because I’ll be continuing further down the line.