“Don’t hate my father,” former childhood star Mackenzie Phillips tells People, but it may be hard not to after this: Phillips, who starred in American Graffiti and the sitcom One Day at a Time, says she had sex with her father, musician John Phillips of the Mamas and the Papas. “On the eve of my wedding, my father showed up, determined to stop it," writes Phillips, who was 19 at the time, in a new book. "I had tons of pills, and Dad had tons of everything too. Eventually I passed out on Dad's bed. My father was not a man with boundaries. He was full of love, and he was sick with drugs. I woke up that night from a blackout to find myself having sex with my own father." In 1980, she went to rehab with her father. By that point, her sexual relationship with him had become consensual.