The stars were married for 11 but endured a turbulent split in 1983, due to infidelity on both sides as Taylor battled a serious drug addiction.
Simon and Taylor have not spoken since the split, but she has opened up about their relationship in her new memoir, Boys in the Trees, and not wanting to upset the couple's children, Sally and Ben, with revelations about their father, she read them parts of the book before they were published.
"I read them sections," she tells Live! with Kelly and Michael. "Sally is just really reading it (book) for the first time whole now and she says, 'Oh my God, I didn't realise it was (like) that!'
"She knew the bare bones about the relationship between her father and me, but she didn't know a lot of the smaller details. So she's having an interesting time with that."
Despite their acrimonious separation, Simon does not hold any ill feelings towards Taylor and insists she still loves the 67 year old.
"My incredible loyalty to him, in spite of the fact that he has treated me without any regard, has been so painful to me for so long," she says. "But, through the course of writing the book, I really started to understand that I could love and not be loved. And that was the big realisation for me - that it doesn't have to be a two-way street."