Ex's Father in Law is My Mate

Three years after Fiona took the fall for her boyfriend and went to prison, she finally regained her freedom.
She expected a promised wedding—instead, she walked straight into a lie of epic proportions.
Her prince charming had traded her for a princess' favor, leaving her heartbroken and drowning in booze...
Fiona had ONS with a hot stranger. Fiona thought the man was a call boy and she'd never see again.Turns out he's not only her new boss, but also the princess' father, the Alpha King.
And, her ex's father-in-law.