Shailene Woodley Admits She Doesn't Believe in Monogamy

March 17, 2014 — -- Having been single for more than four years, "Divergent" star Shailene Woodley isn't sure she believes in the concept of a soulmate -- not yet anyway.

"I just haven't met anyone where I was like, 'Wow, I could definitely see myself spending a season of my life with you,'" she told Marie Claire for its April issue. "I don't even know if humans are genetically made to be with one person forever."

Hollywood's newest "it girl" also opened up about her insecurities growing up, as well as growing up with scoliosis.

"My whole life I've been so self-conscious about being skinny," she added. "And just recently I don't care anymore. All insecurities are projected because of what you think others are saying about you, but they don't really matter at all. My only real insecurities in high school were having such long legs and thick hair—things I'm so very grateful for now."

Read: How Shailene Woodley Is Following in Jennifer Lawrence's Footsteps

Maybe those past insecurities added to "The Fault in Our Stars" actress getting a late start in the romance department.

"I was the latest bloomer there ever was. I was still playing with Barbies at 14 and didn't have my first kiss until 15-and-a-half," she said. "He had big, beautiful lips, and I was like, 'I don't know what I'm going to do with those.'"

Also as a teen, Woodly, 22, had to wear a brace for her back for 18 hours a day.

"It didn't faze me," she said. "I was like, 'Some people have crooked teeth, some people have broken fingers, and I've got a back that ... 'has my initial on it.'"

Related: Shailene Woodley Says She Doesn't Consider Gender When Falling In Love

Woodly even opened up about another popular 20-something Miley Cyrus and admitted to being "fascinated by her."

"I love how everyone's throwing a fit about something that isn't their life," she said.