The Substitute Luna's Revenge

Tala Silver spent seven years masquerading as an Omega for the sake of a political marriage, giving everything only to receive her husband Ralph's cold indifference. When his first love returns, she resolutely leaves, dissolves the blood oath, and tries to rebuild her life. But Ralph refuses to let go, and Bonnie's ambitions drag her into even more conflict. Alex, a vampire duke, becomes her unexpected ally.