Michael Jackson and Priscilla Presley were never close despite being family through marriage.

Jackson avoided the former wife of the King of Rock ‘n’ Roll, and Lisa Marie’s mother always had her suspicions.

Although during the marriage Priscilla was quietly supportive of her daughter, but in the years since she has expressed her concerns about Michael Jackson, and what she believed were his real motivations.

Rabbi Shmuley Boteach, who was Michael Jackson‘s spiritual advisor for two years before they had a falling out, reveals new information on the King of Pop’s marriage to Lisa Marie Presley on tonight’s ET.

The rabbi recorded these conversations — with the Gloved One’s permission — between 1999 and 2001. The tapes reveal in Michael’s own words why his marriage to Lisa Marie ended.

“I wanted children and she didn’t,” he says. The tape goes on to say, “She promised me before we married that the first thing we would do was have children. I was brokenhearted.

“I walked around all the time holding these little baby dolls, and I’d be crying. That’s how badly I wanted it, you know … I was determined to have children.”

“I think Michael’s very clear,” Rabbi Shmuley says. “The deterioration of the marriage was solely, overwhelmingly due to the fact that he wanted an enormous family and Lisa Marie did not.”

Another bombshell that Rabbi Shmuley tells ET is that after Michael’s divorce from Lisa Marie, she desperately wanted to get back into his life. “Lisa Marie called him and said, ‘Let’s rethink this. I’m ready to have children,'” Rabbi Shmuley says.

The Jackson tape goes on to say, “After we got divorced, she would hang out with my mother all the time. I have all these letters she sent: ‘I’ll give you nine children. I’ll do whatever you want.’ And, of course, the press doesn’t know of these stories. And she just tried for months and months, and I became too hardhearted at that point. I had closed my mind on the whole situation.”

These new revelations are in Rabbi Shmuley’s new book, The Michael Jackson Tapes: A Tragic Icon Reveals His Soul in Intimate Conversation, in stores now.

Rabbi Shmuley says he ended his relationship as Jackson’s spiritual advisor in 2001 when Michael began resisting his advice.

“My message to him was simple,” the rabbi says. “Michael, I will always be affectionate towards you, and I will always care about you, and I’ve tried to help you, but if you want to sit here and drive your life off of a cliff, I will not sit here and applaud. That I will not do.”