Ryan O'Neal was convinced his daughter Tatum's pregnancies in the 1980s would help them mend their relationship - and was devastated when the reconciliation never happened.
The former child star's relationship with her dad broke down after he began dating Farrah Fawcett in the late 1970s.
O'Neal learned his daughter was pregnant with her first child in 1985 and was hopeful of a family reconciliation to celebrate the birth of his grandchild - but Tatum refused to speak to him.
He tells CNN chat show host Piers Morgan, "I remember when she got pregnant and she was gonna have a baby and I thought, okay, when she has a baby and she sees what it is to be a mother and how much she loves her baby then she'll know how much I love her, it'll be clear to her.
"She'll also see how hard it is to raise a baby - she knows I raised her single-handedly from infancy, (I thought) so she'll take stock. She never did."
O'Neal and Tatum reunited following the death of Fawcett in 2009.