Jenna Dewan and Channing Tatum shocked many last year when they announced their decision to split after nearly nine years of marriage.

But before that, there came a moment in their relationship when Dewan said she just knew that things werent right.

Id come to realize the dynamic I was in wasnt serving me nor was it serving my daughter, Dewan, a dancer and actor, wrote in her new book, Gracefully You: Finding Beauty and Balance in the Everyday, according to People .

First and foremost I had to accept the realization this isnt working and had moved into hurting, Dewan said.

Dewan and Tatum kept their separation secret for a while, though it involved Dewan having to answer media questions about her then-estranged husband while she filmed the second season of the World of Dance. She later filed for divorce .