Forbidden Princess by Ella Miles

Rialta Corsi is forbidden in more ways than one.
Her mafia father has forbidden anyone from being with her unless they win his game—a game invented to prevent an all-out war.
But that’s not the only reason she’s forbidden to me.
My plan is simple…
Win his daughter.
Win his empire.
Then destroy them all.
Finally get retribution for what was taken from me.
Ri thinks I’m her hero, that I can save her.
I’m not.
I’m nobody’s hero.
I couldn’t save Odette, a woman I love; I can’t save Ri, a woman I hate.

This is book 2 in the Retribution Games series. Ends on a cliffhanger.