Rosie was just 10 when her mom Roseann died of breast cancer, while Tatum's mother, actress Joanna Moore lost custody of her children due to her drug and alcohol abuse when her daughter was six. The couple, who had three children together, divorced in 1994.
Because of O'Neal's serious drug problems Mc Enroe obtained custody of the children in 1998Both had difficult relationships with their dads.
On August 21, Rosie posted a link to Tatum's Harper's Bazaar piece. Both come from Irish backgrounds and were largely brought up by their abusive fathers.
On August 21, Rosie posted a link to Tatum's Harper's Bazaar piece in which she talks about being turned on by women A source close to O'Neal - who was the youngest person ever to win a competitive Oscar when she nabbed the Best Supporting Actress award for Paper Moon in 1974 when she was just 10 - says she and Rosie have been together for nearly two months.
Tatum, who has three grown children from her eight-year marriage to tennis champ John Mc Enroe, announced she was now 'dating mostly women' in an interview with People magazine in May.
Tatum has claimed Ryan O'Neal hit her and emotionally abused her.
The notorious womanizer even tried to chat her up her at his partner Farrah Fawcett's funeral, not recognizing her as he hadn't seen her for so long, he admits. Rosie publicly forgave her father for the way he treated her and her four siblings during an appearance on Piers Morgan's CNN show in 2012.