The Charlie's Angels star married the actor, her second husband, in July, and he filed divorce five months later in December.
Drew opened up about the short-lived relationship during an interview on SiriusXM's The Howard Stern Show.
“We just were young and kind of idiots. I didn’t know how to manage myself. I’ve always said I was a woman in the boardroom and a child in the bedroom. I could go into a studio and pitch, but I didn't know how to handle things in my personal life," Drew said.
Drew is back on good terms with Tom, whom she hadn't spoken to for 15 years after their split, and the comedian recently appeared on her chat show, The Drew Barrymore Show, of which she said: "It just couldn't have been sweeter".
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Drew is also friends with another of her ex-husbands, Will Kopelman – the father of her two daughters, Olive and Frankie. And reflecting on her former love's recent engagement to Alexandra Michler, the actress insisted she wants him to be "happy".
Speaking to Howard, she said it took her five years to decide to start dating after a her relationship with Alex.
"I could not have looked anywhere else for anything. I wasn't open to it. There was no room. This was the most sacred thing I've ever done with my life, with these children. And I couldn't do anything else but honour it."
She recently decided that she's ready to meet people and finally feels "free" to start dating again. She's also joined a dating app.
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