The actress recalled being romantically involved with “horrific people” in the past

Megan Fox is looking back at past abusive relationships with famous partners that she’s kept secret.

The Jennifer’s Body actress writes about toxic relationships and themes of abuse in her new book of poetry titled Pretty Boys Are Poisonous.

In an interview with Good Morning America that aired Tuesday, Fox, 37, talked about finding a creative outlet to delve into her “horrific” past relationships.

“This is not an exposé that I wrote or a memoir. … But throughout my life I have been in at least one physically abusive relationship and several psychologically very abusive relationships,” she said.

“I have only been publicly connected to a few people, but I shared energy with, I guess we could say, who were horrific people. And also very famous — very famous — people,” Fox said. “But no one knows that I was involved with those people.”

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Fox is engaged to musician Machine Gun Kelly (aka Colson Baker), and she shares three kids with ex-husband Brian Austin Green.

The new author told GMA that fiancé MGK encouraged her to write a poetry book. She also revealed that some of the poems she wrote didn’t get published in fear of the scrutiny they’d bring her.

“Some of it is too much when you’re a known person,” explained Fox. “If I had the freedom of just being a poet and people not really wanting to dig too much into my personal life, I would have included more entries like that.”

In one of the Pretty Boys Are Poisonous poems titled “oxycodone and tequila,” Fox writes about a scene of domestic violence.

Machine Gun Kelly and Megan Fox. PRESLEY ANN/GETTY

She writes, “your eyes go black / and I know it’s too late to run,” then describing being pinned down, spit on and choked by a man who is “delusional and possessed.” Fox writes, “you hit me / again / and again / i recognize the familiar taste of blood on my tongue.”

The poem also sees Fox write about being covered in scratches and bite marks. “you fall asleep on top of me so that i can’t call my family or the police,” she writes.

About her poetry, Fox, who also writes in the book about experiencing a miscarriage, recently told PEOPLE, “Some of it is literal, while other parts are allegorical,” but “all of it is something women can relate to.”

“Relationships are complicated,” she said. “For most of us it’s not a fairy tale. Relationships are not pretty. They are ugly. Sometimes they are a war. But through a wound enters an opportunity to grow and become a stronger more whole version of yourself.”

When she announced the book in August, Fox said in a statement: “I’ve spent my entire life keeping the secrets of men, my body aches from carrying the weight of their sins.”

GALLERY BOOKS/SIMON & SCHUSTER

“My freedom lives in these pages,” she added, “and I hope that my words can inspire others to take back their happiness and their identity by using their voice to illuminate what’s been buried, but not forgotten, in the darkness.”