Homoflexible is used to describe an individual who experiences attraction mostly to the same/similar genders, but has occasional tendencies to be attracted to a gender(s) different from one's own. People who identify as homoflexible may identify with this label only, or they may also identify as gay or lesbian. Homoflexible people can also be considered bisexual or otherwise multisexual, however for some, their attraction to the opposite gender is so rare that one may not consider bisexual to be an accurate description of their orientation in most situations.
Kinsey Scale
The Kinsey Scale is a way to determine one's sexual preferences through a test. Once one takes the test, they will be given a score from 0-6; 0 being exclusively heterosexual, 6 being exclusively homosexual. Homoflexible individuals will usually fall at about a 5 on this scale.