An inbetween between bisexual and straight. A person who is mainly straight but does sometimes find the same gender appealing. Most of them could imagine having a homosexual relationship, but they mainly have heterosexual relationships.
Vanessa: "Are you straight or bi?"
Ashley: "I'm about 90% straight and 10% bi, so I'm heteroflexible"
by Clara Bieber September 26, 2015
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I knew she was heteroflexible the minute she walked in the room.

Dude, it's not my fault. I was drunk and it was fun. What can I say? I'm heteroflexible.
by KingdomO October 9, 2010
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A person who identifies as a heterosexual, but is not afraid to explore curiosity towards the same sex.
Nathan: What's heteroflexible?
Brian: It's where someone is straight, but isn't opposed to sex with another man or woman.
by Brian June 19, 2006
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A person who identifies themselves as primarily heterosexual but can find the same sex sexually appealing.
Most girls I know are heteroflexible.
by Syzygy April 1, 2003
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A person who enjoys sex with both male & females but considers themself heterosexual in the sense that they do not relate with the same sex for an emotional relationship like a bi-sexual could. Heteroflexible is a heterosexual person that is beyond the bi-curious stage but would never engage in an emotional relationship with the same sex.
I like the fact that my wife is heteroflexible, she really likes girls as an appeitizer before she's ready for the main course!
by Terri & Dan October 25, 2007
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A primarily straight individual who, in the right circumstances, would hook up with a person of the same sex.
No, he's not gay, but he's cool and heteroflexible.
by John W. Wilson April 7, 2007
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