He's New York's coldest billionaire CEO.And I just accidentally became his daughter's nanny.To be clear, I didn't mean to become anyone's nanny.There was a coffee shop.Some bunny-shaped foam art.And a serious case of mistaken identity.Now I'm working for Sullivan Beaufort.Grumpy. Guarded. Sinfully handsome.And CEO of Beaufort Diamonds.He's a self-proclaimed Love-Hater, haunted by a family tragedy that left scars too deep for anyone to reach.He doesn't want a nanny.He definitely doesn't want me.B...