Where is Millie?

THIS BOOK IS A SEQUEL BUT CAN ALSO BE READ AS A STANDALONE. FOR MORE CONTEXT, READ “THE BILLIONAIRE'S CURE” FIRST “I want nothing more than to fuck your brains till you remember who the fuck you belong to, Millie.” he breathed, I leaned closer to him on instinct. I wanted to tell him to do that. To fuck me till my voice became hoarse from screaming his name. But I couldn't risk everything just for a moment with him anymore. I pulled away, the words tasting bitter as they spilled out of my mouth, “I would never be yours again.” The evil grin on his face was evidence that he knew how much of a liar I was. . . . Years after Heather walked out of her old life, she had gotten almost everything she wanted. A perfect job and amazing friends who cared about her. The only problem was her new boss's cousin who was also her ex-boyfriend. Heather tried everything to avoid Ethan and the questions he would ask: “Why did she leave him?” But after she moved in to a new apartment and realized they were neighbors, she couldn't avoid him forever. Dark secrets from the past uncovered and a mystery person from Heather's old life appeared, their presence threatening to destroy the new life she had built for herself. Or worse. The man she had once left everything for. As the secrets revealed, Heather had to choose between preserving her multiple identities and keep lying to the people she loves, or come clean to them and risk them hating her forever. She had to find a way to do both without losing anything. Will she succeed in her quest and get back the love of her life? Or would her worst fear come true when he realized he couldn't love all versions of her?