Bella Thorne is ready to open up and speak her mind.

Ahead of the release of her latest book this week, the 21-year-old actress sat down with "Good Morning America" to discuss new discoveries in her sexuality, overcoming sexual abuse and what makes her happy.

Thorne, who came out as bisexual on Twitter in 2016, said she's recently realized her sexuality doesn't fit that label.

"I'm actually pansexual, and I didn't know that," Thorne said in the interview, which aired Monday. "Somebody explained to me really thoroughly what that is."

Thorne described her sexuality as favoring someone's personality more than their body.

"You like beings," she said. "You like what you like. Doesn't have to be a girl or a guy or a he or she or they or this or that. It's literally you like personality. You just like a being."

More:Bella Thorne reveals she's bisexual in the most casual way

In her latest book, a collection poems titled "Life of a Wannabe Mogul: Mental Disarray." Thorne tackles her struggles as well, including the sexual abuse she endured through childhood.

"Definitely Stockholm syndrome," Thorne said of her abuse. "I mean, when you're raised with someone and you don't know that it's wrong, it's just very like an everyday occurrence, like no big deal."

Though her book dives into her hardships, Thorne said it also celebrates all she's overcome.

"That's kind of what the series is about. That all these things that I really couldn't do, and I did it somehow," said Thorne, who has now penned four books despite her dyslexia. "Like I couldn't read, and I learned how to read from reading scripts."

As far as the future, Thorne added she has plans beyond just acting.

More:Bella Thorne: 'I was sexually abused' throughout childhood

"I'm doing a lot of writing – writing and directing – and that's definitely when I feel most happy, so I think I have to go more towards that, because I like being happy."

For a look at who Thorne really is, the actress said to look to her poetry instead of her Instagram.

"She's me," she said. "She's that girl in that book."