Vengeful in Love #1 by Nadia Lee

Revenge is sweet...

Self-made billionaire Alex Damon wants his pound of flesh from the people who ripped his family apart. When he discovers his enemies' daughter is working at his company -- and most likely spying for them -- he decides to start his revenge by seducing her.

Natalie Hall is stunned at the personal interest from the CEO of her company. Vulnerable, with an already bruised heart, she wants to avoid any involvement -- but she can't deny the desire he arouses in her.

...but love is sweeter...

What should've been a straightforward eye-for-an-eye starts to unravel as Natalie's unflinching loyalty and kindness begin to thaw Alex's cold intent. But caring for her is unthinkable...since he plans to use everything in his power to ruin her family and everyone else she holds dear.