Wicked Bonds Series (Books 1-5)

All five books. Wicked Lies, Wicked Games, Wicked Secrets, Wicked Revenge, and Wicked Vows. Five full-length novels, 300,000+ words. One girl, three mafia brothers who share her, and the vows that bind all four of them together in blood. Binge the whole series. No waiting, no cliffhanger at the end.