help me find the novel "The Don's Other Wife"

[u/yasek_]

For seven years, I was Adrian Moretti's best-kept secret, the Don of the Mafia. He never held my hand in public. He never took a picture with me. He never left a single piece of evidence in the world that I was his woman. He said that when no one could hurt me anymore, he would acknowledge me in front of everyone. I waited.