Dark Restraint (Dark Olympus #7)

Ariadne Vitalis is in trouble. She's betrayed her father―and his benefactor―and now she's left to rely on the questionable mercy of Olympus to keep her safe. As with everything in this city, mercy comes with a price. For Ariadne, that means a marriage to Dionysus. She has no choice but to agree, even if there's only one man she's ever wanted―a man she's feared just as much as she desires. 

Dark Restraint is book  umber 7 in the Dark Olympus series by Katee Robert.