Roasting his multi-talented friend at the 2017 American Film Awards gala, where Keaton was presented a Lifetime Achievement Award, Woody Allen joked about her eating disorder, that she hid from him while they were dating.

“I didn’t know many things until I read her books,” Allen joked. “I didn’t know she was bulimic… I would be taking her to these high-end restaurants. $400 for dinner. If I knew she was throwing them up, I could have taken her to Pizza Hut.”

Though Keaton was among the star-studded crowd that erupted into laughter, her bulimia was very serious to her.

Insisting that she didn’t lose the weight to meet the demands of the Hair producers, Keaton said she continued to keep the weight off and “became a master at hiding. Hiding any evidence–how do you make sure no one knows? You live a lifestyle that is very strange. You’re living a lie.”

She adds, “People were nice enough, but I felt like an outsider,” she says. “I had a problem–it was sick and creepy. Bulimia takes a lot of time out of your day.”

Rom-com royalty, the star, who’s never been married, revels in motherhood. Keaton has one daughter, Dexter Keaton White, 27, and a son, Duke Keaton, 23, both whom she adopted when she in her 50s.

“I didn’t think that I was ever going to be prepared to be a mother. Motherhood was not an urge I couldn’t resist, (and) it was more like a thought I’d been thinking for a very long time. So I plunged in,” she said.

And to balance her hectic filming schedule, Keaton lives in a self-constructed nirvana, a farmhouse-style brick mansion that she designed and built. The home, inspired by her obsession with Pinterest, and her affinity to the “Three Little Pigs,” Keaton describes the thought and building process behind her rustic-chic home in her book, “The House that Pinterest Built.”