Shailene Woodley has hinted she's hooked up with a co-star before.

The 22-year-old actress admits she's never dated anyone she's shooting a movie with, but she has implied she once briefly struck up a romance with someone after filming had wrapped.

She said: ''I haven't had time to think about a relationship! I literally have not had a boyfriend in almost five years. I've never even hooked up with anybody I've worked on a movie with.''

However, when asked if she's dated anyone after filming, she told Teen Vogue magazine with a laugh: ''Well, that might have happened on something....''

The 'Divergent' star has been romantically linked to her 'The Spectacular Now' co-star Miles Teller in the past, but she insists they have more of a brother and sister type of relationship.

She said previously: ''I would say we have like a sibling relationship but with moments of sexual tension.''

Meanwhile, the brunette beauty recently admitted she refuses to limit herself to one sex when it comes to dating and is instead attracted to people's personalities.

She said: ''I fall in love with human beings based on who they are, not based on what they do or what sex they are.''