A person who identifies themselves as primarily heterosexual but can find the same sex sexually appealing.

A primarily heterosexual person who's not opposed to occasional same-sex trysts when circumstances permit.

A person who identifies as a heterosexual, but is not afraid to explore curiosity towards the same sex.

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.

A primarily straight individual who, in certain situations can find persons of the same sex appealing.

someone who does not consider themselves bisexual because they do not date people of both sexes but still thinks people from both sexes are attractive and may or may not engage in sexual activities with said person

A primarily straight individual who, in the right circumstances, would hook up with a person of the same sex.