The actress's second memoir Found: A Daughter's Journey Home includes details of her near-relapse into drug addiction as well as her continued struggle to repair her bond with her father.
"I forgive him all the time. He doesn't stop doing the stupid stuff but at the same time I have a boundary now. I have conditions and things that I kind of had to learn growing up away from him to be the woman that I am and want to be," Tatum explained to PopEater.
"I realise in going back to my dad that I am the oldest female that he hangs around with so he's not hearing conversations that are relevant or about women in his age group. He's only comfortable, I would say, with women who are much younger and so in some way I must threaten him."
Ryan O'Neal previously expressed anger over Tatum's first memoir A Paper Life as he felt it was inappropriate for her to discuss family business in public.
It was once revealed that Ryan accidentally hit on Tatum at Farrah Fawcett's funeral, which he banned her brother Griffin from attending.